javascript-jquery.md

javascript / jquery

array

let arr = [];
arr.push(1);
arr.push(2);
arr.slice(arr.indexOf(1)); // remove element 1 (index 0)

locate with jquery

• search any with some class

let q1 = $('.someclass');

• search any specific descendant with class that have parent with some class

<table class="sometblclass">
  <tbody>
    <tr>
      <td class="j-mycls"></td>
    </tr>
  </tbody>
</table>

let q1 = $(".sometblclass > tbody > tr > td.j-mycls");

• search class1 or class2

let q = $(".class1,.class2");

• search any element with attribute

<button mynfo="xx"></button>

$("button[mynfo]").each((idx,btn) => {
  let mynfo = $(btn).attr("mynfo");
});

• search with starting

let q = $("[class^='starttext']");

• search class1 but not class2

let q = $(".class1").not(".class2");