<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">第一题：
var a = [];
for (var i = 0; i < 10; i++) {
a[i] = function () {
return i;
}
}
a[8]();问：结果是多少？
正确答案是10，我也知道是怎么来的，可是面试官说，上面的代码如何能获取正确结果，请用ES5和ES6分别作答，这个我就不懂了。
第二题：
console.log(text)
function text() {}
var text = 0;
console.log(text)；结果我是知道的，第一个就是function,第二个是0，但是面试官问我为什么？如果把第二行和第三行互换，结果是怎样，为什么？
第一道题考你对作用域的理解，结果是10,因为作用域分为全局作用域和函数作用域,这里的i当你调用这个函数的时候,已经是循环后的i了,也就是10。
es5的方法是用立即执行函数创建独立作用域，如下
for (var i = 0; i < 10; i++) {
a[i] = function bar(i){
return function () {
return i;
};
}(i);
}
a[8]();es6的方法直接var改为let,这样子for 的 i 变量就有块作用域，如下
var a = [];
for (let i = 0; i < 10; i++) {
a[i] = function () {
return i;
}
}第二道题考你变量名和函数声明都要提升,为什么？因为代码解释器会预编译成：
var text；
function text() {}
console.log(text)
text = 0;
console.log(text)；交换第二行和第三行位置,如下:
console.log(text)
var text = 0;
function text() {}
console.log(text);解释器同样会预编译成:
var text;
function text() {}
console.log(text)
text = 0;
console.log(text);所以结果还是一样
在一个文档中，每个 元素 都被表示为 一个矩形的盒子。
每个盒子有四个边：外边距边, 边框边, 内填充边 与 内容边。
根据 W3C 的规范，元素内容占据的空间是由 width 属性设置的，而内容周围的 padding 和 border 值是另外计算的。不幸的是，IE5.X 和 6 在怪异模式中使用自己的非标准模型。这些浏览器的 width 属性不是内容的宽度，而是内容、内边距和边框的宽度的总和。
解决IE8及更早版本不兼容问题可以在HTML页面声明 <!DOCTYPE html>即可。
box-sizing 属性用于更改用于计算元素宽度和高度的默认的 CSS 盒子模型。
element ui checkBoxs 是否选中为true、false 需要转换成接口接受的0、1
function inCopy(obj1,obj2) {
var obj1 = obj1 || {};//容错处理
for (var k in obj2) {
if(obj2.hasOwnProperty(k)){ //只拷贝实例属性，不进行原型的拷贝
if(typeof obj2[k] == 'object') { //引用类型的数据单独处理
obj1[k] = Array.isArray(obj2[k])?[]:{};
inCopy(obj1[k],obj2[k]); //递归处理引用类型数据
}else{
obj1[k] = obj2[k]; //值类型的数据直接进行拷贝
}
}
}
}function deepClone(source){
if(!source && typeof source !== 'object'){
throw new Error('error arguments', 'shallowClone');
}
var targetObj = Array.isArray(source) ? [] : {};
for(var keys in source){
if(source.hasOwnProperty(keys)){
if(source[keys] && typeof source[keys] === 'object'){
targetObj[keys] = deepClone(source[keys]); //递归
}else{
targetObj[keys] = source[keys];
}
}
}
return targetObj;
}
tween算法原理解析1 tween算法原理解析2 tween算法原理解析3
弹跳效果：easeOutbounce
'translateX(-230px)'.match(/translateX\((.*)\)/)[1]
alert((element.currentStyle? element.currentStyle : window.getComputedStyle(element, null)).height);<script type="text/javascript">
var u = navigator.userAgent;
var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
alert('是否是Android：'+isAndroid);
alert('是否是iOS：'+isiOS);
</script><script type="text/javascript">
//判断访问终端
var browser={
versions:function(){
var u = navigator.userAgent, app = navigator.appVersion;
return {
trident: u.indexOf('Trident') > -1, //IE内核
presto: u.indexOf('Presto') > -1, //opera内核
webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,//火狐内核
mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
android: u.indexOf('Android') > -1 || u.indexOf('Adr') > -1, //android终端
iPhone: u.indexOf('iPhone') > -1 , //是否为iPhone或者QQHD浏览器
iPad: u.indexOf('iPad') > -1, //是否iPad
webApp: u.indexOf('Safari') == -1, //是否web应该程序，没有头部与底部
weixin: u.indexOf('MicroMessenger') > -1, //是否微信 （2015-01-22新增）
qq: u.match(/\sQQ/i) == " QQ" //是否QQ
};
}(),
language:(navigator.browserLanguage || navigator.language).toLowerCase()
}
</script>https://www.cnblogs.com/wangyihong/p/7514304.html
http://www.cnblogs.com/dtdxrk/p/3682352.html
https://segmentfault.com/q/1010000004307305
//去掉html标签
function removeHtmlTab(tab) {
return tab.replace(/<[^<>]+?>/g,'');//删除所有HTML标签
}
//普通字符转换成转意符
function html2Escape(sHtml) {
return sHtml.replace(/[<>&"]/g,function(c){return {'<':'<','>':'>','&':'&','"':'"'}[c];});
}
//转意符换成普通字符
function escape2Html(str) {
var arrEntities={'lt':'<','gt':'>','nbsp':' ','amp':'&','quot':'"'};
return str.replace(/&(lt|gt|nbsp|amp|quot);/ig,function(all,t){return arrEntities[t];});
}
var ff = e.target.files[0];
var reader = new FileReader();
reader.readAsDataURL(ff);
let param = new FormData() // 创建form对象
param.append('upfile', ff, ff.name) // 通过append向form对象添加数据
let config = {
headers: {'Content-Type': 'multipart/form-data'}
}
// var params = new URLSearchParams();
// params.append('upfile', ff);
axios.post('/oss/picupload', param, config
// {
// 'upfile': ff
// }
)
.then(function(res){
console.log(res);
});
var data = new FormData();
data.append('upfile', ff)
$.ajax({
url: '/oss/picupload',
type: 'post',
processData: false,
contentType: false,
data:
data
// JSON.stringify({
// 'upfile': 'ff'
// })
,
dataType: 'json',
success: function(res){
console.log(res);
}
});
window.getComputedStyle
获取width、height
window.getComputedStyle("元素", "伪类"); IE9以下不支持，需使用element.currentStyle； 其中暂时测试IE9不支持伪类
张鑫旭文章：http://www.zhangxinxu.com/wordpress/2012/05/getcomputedstyle-js-getpropertyvalue-currentstyle/
clientWidth和clientHeight
表示内容区域的高度和宽度，包括padding大小，但是不包括边框和滚动条
全浏览器支持
张鑫旭文章：http://www.zhangxinxu.com/wordpress/2011/09/cssom%E8%A7%86%E5%9B%BE%E6%A8%A1%E5%BC%8Fcssom-view-module%E7%9B%B8%E5%85%B3%E6%95%B4%E7%90%86%E4%B8%8E%E4%BB%8B%E7%BB%8D/
offsetHeight
是一个只读属性，它返回该元素的像素高度，高度包含该元素的垂直内边距和边框，且是一个整数
MDN：https://developer.mozilla.org/zh-CN/docs/Web/API/HTMLElement/offsetHeight
outHeight
无此属性
Element.getBoundingClientRect()方法返回元素的大小及其相对于视口的位置。
(其中width：包含width + padding + border)
http://www.html5tricks.com/html5-ball-pool.html http://blog.csdn.net/lufy_legend/article/details/7654607 http://www.htmleaf.com/jQuery/Layout-Interface/201506142030.html
var pattern = /<("[^"]*"|'[^']*'|[^'">])*>/http://imweb.io/topic/56e804ef1a5f05dc50643106
<div class="count-string" contenteditabel="true" placeholder="输入文字..."></div>
.count-string:empty:before{
content: attr(placeholder);
color: #757575;
}区别：
body是DOM对象里的body子节点，即 标签； documentElement 是整个节点树的根节点root，即 标签；
没使用DTD情况即怪异模式BackCompat下：
document.documentElement.clientHeight=0 document.body.clientHeight=618
使用DTD情况即标准模式CSS1Compat下：
document.documentElement.clientHeight=618 document.body.clientHeight=28(表示内容的高度)
function HTMLEncode(html) {
var temp = document.createElement("div");
(temp.textContent != null) ? (temp.textContent = html) : (temp.innerText = html);
var output = temp.innerHTML;
temp = null;
return output;
}
var tagText = "<p><b>123&456</b></p>";
console.log(HTMLEncode(tagText));//<p><b>123&456</b></p> function HTMLDecode(text) {
var temp = document.createElement("div");
temp.innerHTML = text;
var output = temp.innerText || temp.textContent;
temp = null;
return output;
}
var tagText = "<p><b>123&456</b></p>";
var encodeText = HTMLEncode(tagText);
console.log(encodeText);//<p><b>123&456</b></p>
console.log(HTMLDecode(encodeText)); //<p><b>123&456</b></p> function getStyle(element, css){
var elementStyle = window.getComputedStyle ? window.getComputedStyle(element, null) : element.currentStyle;
var elementCss = elementStyle.getPropertyValue ? elementStyle.getPropertyValue(css) : elementStyle.getAttribute(css); // getPropertyValue、getAttribute都支持 "background-color" 写法（不考虑IE6）
return elementCss;
}http://www.cnblogs.com/fan-fan/p/4526817.html
http://www.mamicode.com/info-detail-651198.html
1、值类型：即5种基本类型（string,number,boolean,null,undefined）；
2、引用类型：即数组、函数、对象共三种。这三种类型的处理与值类型会有很大的差别。
typeof "s" // string
typeof 1 // number
typeof null // object
typeof undefined // undefined
typeof true // boolean
typeof function(){} // function
typeof {} // object
typeof [] // object
window.onbeforeunload = function (e) {
e = e || window.event;
// 兼容IE8和Firefox 4之前的版本
if (e) {
e.returnValue = '关闭提示';
}
console.log(111);
// Chrome, Safari, Firefox 4+, Opera 12+ , IE 9+
return '关闭提示';
};
find . "(" -name "*.m" -or -name "*.mm" -or -name "*.cpp" -or -name "*.h" -or -name "*.rss" -or -name "*.xib"-or -name "*.swift" ")" -print | xargs wc -l
https://www.cnblogs.com/wxb-it/p/7774758.html
[http://www.cnblogs.com/ypinchina/p/7827169.html](vue多文件上传进度条 进度不更新问题)
var form = new FormData()
form.append('file', vm.$refs.upload.files[0])
form.append('id', id)
form.append('type', type)
var config = {
onUploadProgress: progressEvent => {
var complete = (progressEvent.loaded / progressEvent.total * 100 | 0) + '%'
this.progress = complete
}
}
axios.post(`api/uploadFile`,
form, config).then((res) => {
if (res.data.status === 'success') {
console.log('上传成功')
}
})// 跳转支付宝
that.$toast(res.data.msg);
defaultFn.AxiosPost('/alipay/alipayGenOrderInfoForH5', {
'userId': localStorage.getItem('userId'),
'subject': '充值',
'cash': that.projectDetail.project.pay,
'return_url': window.location.href ,
'paymentType': '2'
})
.then(ress => {
if (ress.data.code != 0) {
that.$toast(ress.data.msg);
}else {
let payData = ress.data.data;
let payDataArr = payData.split('&');
let payDataObj = {};
for(let i in payDataArr){
payDataObj[payDataArr[i].split('=')[0]] = payDataArr[i].split('=')[1];
}
// console.log(payDataObj);
// Axios.post('https://openapi.alipay.com/gateway.do?' + payData)
// .then(resss => {
// console.log(resss);
// });
// https://openapi.alipay.com/gateway.do
window.location.href = 'https://openapi.alipay.com/gateway.do?' + payData;
}
});let hashUrl = window.location.href.split('#')[1];
let hashUrlJson = {
'access_token': '',
'expires_in': '',
'state': ''
};
hashUrlJson.access_token = hashUrl.split('&')[0].split('=')[1];
hashUrlJson.expires_in = hashUrl.split('&')[1].split('=')[1];
hashUrlJson.state = hashUrl.split('&')[2].split('=')[1];
defaultFn.AxiosPost('/account/qq', hashUrlJson)
.then(res => {
// console.log(res);
switch(res.data.code){
// console.log(res);
case 0:
localStorage.setItem('token', res.data.token);
localStorage.setItem('userId', res.data.data.id);
// console.log(res);
window.location.href = decodeURIComponent(res.data.state);
break;
case 1:
that.showBindPhone = true;
that.type = res.data.state;
that.id = res.data.openId;
break;
case 2:
that.showBindPhone = true;
that.type = res.data.state;
that.id = res.data.openId;
break;
case 4:
that.$toast(res.data.msg);
setTimeout(function(){
window.location.href = decodeURIComponent(res.data.state);
}, 1000);
break;
case -1:
that.$toast(res.data.msg);
setTimeout(function(){
window.location.href = decodeURIComponent(res.data.state);
}, 1000);
break;
}
});let hashUrl = window.location.href.split('?')[1];
let hashUrlJson = {
'code': '',
'type': 'SRV',
'state': ''
};
hashUrlJson.code = hashUrl.split('&')[0].split('=')[1];
hashUrlJson.state = hashUrl.split('&')[1].split('=')[1];
defaultFn.AxiosPost('/account/wx', hashUrlJson)
.then(res => {
// console.log(res);
switch(res.data.code){
// console.log(res);
case 0:
localStorage.setItem('token', res.data.token);
localStorage.setItem('userId', res.data.data.id);
// console.log(res);
window.location.href = decodeURIComponent(res.data.state);
break;
case 1:
that.showBindPhone = true;
that.type = res.data.state;
that.id = res.data.openId;
break;
case 2:
that.showBindPhone = true;
that.type = res.data.state;
that.id = res.data.openId;
break;
case -1:
that.$toast(res.data.msg);
setTimeout(function(){
window.location.href = decodeURIComponent(res.data.state);
}, 1000);
break;
case 4:
that.$toast(res.data.msg);
setTimeout(function(){
window.location.href = decodeURIComponent(res.data.state);
}, 1000);
break;
}
});// 首先，我们使用npm 安装两个别人封装好的模块。
npm install ssh2-sftp-client
npm install gaze
// 第一个模块的作用是sftp上传文件，
第二个模块的作用就是监听文件变化了。当然，你也可以采用node自带fs模块。gaze(['你的文件路径/*.*','还可以使用数组的方式监听多个文件夹/app.js'], function(err, watcher) {
let watched = this.watched();
//监听文件的变化
this.on('changed', (filepath) => {
//romotePath是我文件的远程位置
let romotePath = '/root' + filepath.substr(15);
//put为上传文件的函数，下面会讲
put(filepath,romotePath);
console.log(filepath + ' was changed');
});
});function put(localPath,romotePath){
let sftp = new Client();
sftp.connect({
host: '你的服务器地址',
port: '端口，没改过的话是22',
username: '连接的用户名',
password: '密码'
}).then(() => {
return sftp.put(localPath,romotePath);
}).then(() =>{
console.log("上传完成");
}).catch((err) => {
console.log(err, 'catch error');
});
}参考：http://www.jb51.net/article/105991.htm
_debounce(fn,wait){
// 全部timer
let that = this;
// that.timer = null;
return function(){
console.log(22)
clearTimeout(that.timer)
that.timer = setTimeout(()=>{
// clearTimeout(timer)
fn()
},wait)
}
},
_log(){
console.log(1)
},
// @click="_debounce(_log, 1000)()"<!doctype html>
<html><head>
<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0, maximum-scale=1.0">
<style type='text/css'>
html { font-family:Helvetica; color:#222; }
h1 { color:steelblue; font-size:24px; margin-top:24px; }
button { margin:0 3px 10px; font-size:12px; }
.logLine { border-bottom:1px solid #ccc; padding:4px 2px; font-family:courier; font-size:11px; }
</style>
</head><body>
<h1>WebViewJavascriptBridge Demo</h1>
<script>
window.onerror = function(err) {
log('window.onerror: ' + err)
}
function setupWebViewJavascriptBridge(callback) {
if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
window.WVJBCallbacks = [callback];
var WVJBIframe = document.createElement('iframe');
WVJBIframe.style.display = 'none';
WVJBIframe.src = 'https://__bridge_loaded__';
document.documentElement.appendChild(WVJBIframe);
setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
}
setupWebViewJavascriptBridge(function(bridge) {
var uniqueId = 1
function log(message, data) {
var log = document.getElementById('log')
var el = document.createElement('div')
el.className = 'logLine'
el.innerHTML = uniqueId++ + '. ' + message + ':<br/>' + JSON.stringify(data)
if (log.children.length) { log.insertBefore(el, log.children[0]) }
else { log.appendChild(el) }
}
bridge.registerHandler('testJavascriptHandler', function(data, responseCallback) {
log('ObjC called testJavascriptHandler with', data)
var responseData = { 'Javascript Says':'Right back atcha!' }
log('JS responding with', responseData)
responseCallback(responseData)
})
document.body.appendChild(document.createElement('br'))
var callbackButton = document.getElementById('buttons').appendChild(document.createElement('button'))
callbackButton.innerHTML = 'Fire testObjcCallback'
callbackButton.onclick = function(e) {
e.preventDefault()
log('JS calling handler "testObjcCallback"')
bridge.callHandler('testObjcCallback', {'foo': 'bar'}, function(response) {
log('JS got response', response)
})
}
})
</script>
<div id='buttons'></div> <div id='log'></div>
</body></html>
setupWebViewJavascriptBridge(callback) {
if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
window.WVJBCallbacks = [callback];
var WVJBIframe = document.createElement('iframe');
WVJBIframe.style.display = 'none';
WVJBIframe.src = 'https://__bridge_loaded__';
document.documentElement.appendChild(WVJBIframe);
setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
}
this.setupWebViewJavascriptBridge(function(bridge) {
// var uniqueId = 1
// function log(message, data) {
// var log = document.getElementById('log')
// var el = document.createElement('div')
// el.className = 'logLine'
// el.innerHTML = uniqueId++ + '. ' + message + ':<br/>' + JSON.stringify(data)
// if (log.children.length) { log.insertBefore(el, log.children[0]) }
// else { log.appendChild(el) }
// }
bridge.registerHandler('testJavascriptHandler', function(data, responseCallback) {
// log('log::222::::::', data)
that.devNo = JSON.stringify(data);
var responseData = { 'Javascript Says':'Right back atcha!' }
// log('JS responding with', responseData)
responseCallback(responseData)
})
// document.body.appendChild(document.createElement('br'))
// var callbackButton = document.getElementById('buttons').appendChild(document.createElement('button'))
// callbackButton.innerHTML = 'Fire testObjcCallback'
// callbackButton.onclick = function(e) {
// e.preventDefault()
// log('JS calling handler "testObjcCallback"')
// bridge.callHandler('testObjcCallback', {'foo': 'bar'}, function(response) {
// log('JS got response', response)
// that.devNo = response;
// })
// }
})
this.$refs.parent.scrollTop = 20;
this.element = this.$refs.box;
while(this.elementTagName != 'body'){
this.elementTagName = this.element.tagName.toLowerCase();
if(this.element.parentNode.tagName.toLowerCase() == 'body'){
this.offsetTop += this.element.offsetTop;
} else {
if(this.getStyle(this.element.parentNode, 'position') != 'static'){
this.offsetTop += this.element.offsetTop;
}
}
console.log("box距离顶部距离：" + this.offsetTop );
console.log(this.element.parentNode.tagName.toLowerCase() );
console.log(this.getStyle(this.element, 'position'));
this.element = this.element.parentNode;
}
http://ghmagical.com/iframe/modal/code/:javascript:getSelection
HTMLCSSJS效果
var selectedRange = '';
function setFrameEdit() {
var frame = document.getElementById("edit2");
var frameDocument = frame.contentDocument;
frameDocument.designMode = 'on';
frameDocument.body.style.color = '#fff';
frameDocument.body.innerHTML = '我是可编辑的iframe';
};
setFrameEdit();
// function getSelectionRect() {
// if(window.getSelection) {
// var sel = window.getSelection();
// if(sel.rangeCount == 0) {
// return;
// };
// var range = sel.getRangeAt(0).cloneRange();
// if(range.getBoundingClientRect) {
// var rect = range.getBoundingClientRect();
// if(rect && rect.left && rect.top && rect.right && rect.bottom)
// return {
// left: parseInt(rect.left),
// top: parseInt(rect.top),
// width: parseInt(rect.right - rect.left),
// height: parseInt(rect.bottom - rect.top)
// };
// }
// } else if(document.selection) {
// var sel = document.selection;
// if(sel.type != 'Control') {
// var range = sel.createRange();
// // IE
// if(range.boundingLeft || range.boundingTop || range.boundingWidth || range.boundingHeight)
// return {
// left: range.boundingLeft,
// top: range.boundingTop,
// width: range.boundingWidth,
// height: range.boundingHeight
// };
// }
// }
// return false;
// }
function setContextMenu() {
var edit = document.querySelector('.edit');
edit.oncontextmenu = function(e) {
e = e || window.event;
e.preventDefault();
var top = e.pageY || e.clientY + document.body.scrollTop + document.docuemntElement.scrollTop;
top -= this.scrollTop;
var left = e.pageX || e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
left -= this.scrollLeft;
var menu = '<div class="contextmenu" style="background:#fff;color:#333;padding:10px;position:fixed;top:' + top + 'px;left:' + left + 'px">';
menu += '<a>右键菜单</a>';
menu += '</div>';
var box = document.createElement('div');
box.innerHTML = menu;
var menuBox = document.querySelector('.contextmenu');
if(menuBox) {
menuBox.style.top = top + 'px';
menuBox.style.left = left + 'px';
} else {
document.body.appendChild(box.firstChild);
}
};
window.addEventListener('click',function(e){
e = e || window.event;
var menuBox = document.querySelector('.contextmenu');
if(menuBox){
var target = e.target;
var parent = target.parentNode;
if(parent.nodeName != 'DIV' || !parent.classList.contains('contextmenu')){
document.body.removeChild(menuBox);
}
}
});
}
setContextMenu();
function deleteRange() {
if(selectedRange) {
selectedRange.deleteContents();
}
};
function toTextEnd(elem) {
if(window.getSelection) {
elem.setSelectionRange(elem.value.length, elem.value.length);
elem.focus()
} else if(document.selection) {
/*IE下*/
var range = elem.createTextRange();
range.moveStart('character', elem.value.length);
range.collapse(true);
range.select();
}
};
function setCursorEnd(elem) {
if(window.getSelection) {
elem.focus();
var range = window.getSelection();
range.selectAllChildren(elem);
range.collapseToEnd();
} else if(document.selection) {
var range = document.selection.createTextRange();
range.moveToElementText(elem);
range.collapse(false);
range.select();
}
}
function selectAllText(elem) {
if(window.getSelection) {
elem.setSelectionRange(0, elem.value.length);
elem.focus();
} else if(document.selection) {
var range = elem.createTextRange();
range.select();
}
}
function deleteRange2() {
if(selectedRange) {
var fragment = selectedRange.extractContents();
document.querySelector('.show span').appendChild(fragment);
}
};
function saveSelection() {
if(window.getSelection) {
/*主流的浏览器，包括chrome、Mozilla、Safari*/
return window.getSelection();
} else if(document.selection) {
/*IE下的处理*/
return document.selection.createRange();
};
return null;
};
function saveSelection2() {
if(window.getSelection) {
/*主流的浏览器，包括chrome、Mozilla、Safari*/
var sel = window.getSelection();
if(sel.rangeCount > 0) {
return sel.getRangeAt(0);
}
} else if(document.selection) {
/*IE下的处理*/
return document.selection.createRange();
}
return null;
};
function getRangePosition() {
console.log(selectedRange);
if(selectedRange) {
return {
startOffset: selectedRange.startOffset,
endOffset: selectedRange.endOffset,
collapsed: selectedRange.collapsed,
startContainer: selectedRange.startContainer.parentNode.nodeName,
endContainer: selectedRange.endContainer.parentNode.nodeName,
commonAncestorContainer: selectedRange.commonAncestorContainer.nodeName
};
};
return null;
};
function getSelectionPosition() {
var selection = window.getSelection();
var p = {
anchorNode: selection.anchorNode.parentNode.nodeName,
anchorOffset: selection.anchorOffset,
focusNode: selection.focusNode.parentNode.nodeName,
focusOffset: selection.focusOffset
};
document.querySelector('.show span').innerHTML = '';
for(var k in p) {
document.querySelector('.show span').innerHTML += '</br>' + k + '： <span class="highlight">' + p[k] + '</span>';
}
};
function restoreSelection() {
var selection = window.getSelection();
if(selectedRange) {
try {
selection.removeAllRanges(); /*清空所有Range对象*/
} catch(ex) {
/*IE*/
document.body.createTextRange().select();
document.selection.empty();
};
/*恢复保存的范围*/
selection.addRange(selectedRange);
}
};
function insertRange() {
restoreSelection();
var content = ''
if(document.createRange) {
var range = document.createRange();
var span = document.querySelector('.edit span');
var p = document.querySelector('.edit p');
range.setStart(span.firstChild, 20);
range.setEnd(p.firstChild, 3);
content = range.cloneContents();
};
document.querySelector('.show span').appendChild(content);
};
document.getElementById("setCursorEnd").addEventListener('click', function() {
setCursorEnd(document.querySelector('.edit'));
});
document.getElementById("selectAllText").addEventListener('click', function() {
selectAllText(document.querySelector('textarea'));
});
document.querySelector('.edit').addEventListener('mouseup', function() {
selectedRange = saveSelection2();
});
document.getElementById("getRange").addEventListener('click', function() {
selectedRange = saveSelection();
document.querySelector('.show span').innerHTML = selectedRange; //如果是IE下，必须使用selection.text来获取内容
});
document.getElementById("getRange2").addEventListener('click', function() {
selectedRange = saveSelection2();
document.querySelector('.show span').innerHTML = selectedRange; //如果是IE下，必须使用selection.text来获取内容
});
document.getElementById("getOffset").addEventListener('click', function() {
selectedRange = saveSelection2();
var p = getRangePosition();
document.querySelector('.show span').innerHTML = '';
for(var k in p) {
document.querySelector('.show span').innerHTML += '</br>' + k + '： <span class="highlight">' + p[k] + '</span>';
}
});
document.getElementById("setToTextEnd").addEventListener('click', function() {
toTextEnd(document.querySelector('textarea'));
})
document.getElementById("setColor").addEventListener('click', function() {
restoreSelection();
document.execCommand('forecolor', false, 'red');
});
npm install weixin-js-sdk -D// 微信分享
defaultFn.AxiosPost('/account/wxSrvSignature', {
"url": window.location.href
})
.then(rea=>{
console.log(rea);
defaultFn.AxiosPost('/share/queryshareurl', {
"ioType": 1008,
"userId": that.dynamic.data.userId,
"clubId": that.dynamic.data.clubId,
"clubDynaId": that.dynamic.data.id
})
.then(reb=>{
wx.config({
debug: false,
appId: 'wxc94818fe8e0407f1',
nonceStr: rea.data.noncestr,
timestamp: rea.data.timestamp,
signature: rea.data.signature,
jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage','onMenuShareQQ',
'onMenuShareWeibo','onMenuShareQZone','chooseImage',
'uploadImage','downloadImage','startRecord','stopRecord',
'onVoiceRecordEnd','playVoice','pauseVoice','stopVoice',
'translateVoice','openLocation','getLocation','hideOptionMenu',
'showOptionMenu','closeWindow','hideMenuItems','showMenuItems',
'showAllNonBaseMenuItem','hideAllNonBaseMenuItem']
});
wx.ready(function(){
wx.onMenuShareQZone({
title: reb.data.data.title,
desc: reb.data.data.addTitle,
imgUrl: reb.data.data.icon,
success: function(){
// alert("success!!!Q");
},
cancel: function(){
}
});
wx.onMenuShareQQ({
title: reb.data.data.title,
desc: reb.data.data.addTitle,
imgUrl: reb.data.data.icon,
success: function(){
// alert("success!!!Q");
},
cancel: function(){
}
});
wx.onMenuShareAppMessage({
title: reb.data.data.title,
desc: reb.data.data.addTitle,
imgUrl: reb.data.data.icon,
success: function(){
// alert("success!!!Q");
},
cancel: function(){
}
});
wx.onMenuShareTimeline({
title: reb.data.data.title,
desc: reb.data.data.addTitle,
imgUrl: reb.data.data.icon,
success: function(){
// alert("success!!!Q");
},
cancel: function(){
}
});
});
});
});微信分享： https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1483682025_enmey
微信授权登陆： https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140842
微信内公众号支付： https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6
微信内H5支付： https://pay.weixin.qq.com/wiki/doc/api/H5.php?chapter=15_4
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Functions/Default_parameters
JavaScript 中函数的参数默认是undefined。然而，在某些情况下可能需要设置一个不同的默认值。这是默认参数可以帮助的地方。
以前，一般设置默认参数的方法是在函数体测试参数是否为undefined，如果是的话就设置为默认的值。下面的例子中，如果在调用multiply时，参数b的值没有提供，那么它的值就为undefined。如果直接执行a*b，函数会返回 NaN。但是第二行代码解决了这个问题：
function multiply(a, b) {
b = (typeof b !== 'undefined') ? b : 1;
return a * b;
}
multiply(5, 2); // 10
multiply(5, 1); // 5ant-design/ant-design-pro#1365
对应的nginx配置如下：
upstream example-be {
ip_hash;
server unix:/run/example-be.sock;
}
server{
listen 80; #监听端口
server_name example.com
# 后台api
location ~ ^/api {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
include uwsgi_params;
uwsgi_pass example-be;
}
# 前端静态文件
location ~* \.(gif|jpg|jpeg|png|css|js|ico|eot|otf|fon|font|ttf|ttc|woff|woff2)$ {
root /var/www/example-fe/dist/;
}
# 前端html文件
location / {
# disable cache html
add_header Cache-Control 'no-cache, must-revalidate, proxy-revalidate, max-age=0';
root /var/www/example-fe/dist/;
index index.html index.htm;
try_files $uri /index.html;
}
}
由于浏览器缓存静态文件的时间不可控，我们可以在nginx上自己配置expires 1M（1个月）
# 前端静态文件
location ~* \.(gif|jpg|jpeg|png|css|js|ico|eot|otf|fon|font|ttf|ttc|woff|woff2)$ {
root /var/www/example-fe/dist/;
expires 1M;
add_header Cache-Control "public";
}