javascript 判断两个数组嵌套结构一致

[sunhengzhe]

在 Array 原型链上添加一个方法 sameStructureAs，用于比较该数组与接收参数的 嵌套结构是否一致。

示例:

 // should return true
[ 1, 1, 1 ].sameStructureAs( [ 2, 2, 2 ] );          
[ 1, [ 1, 1 ] ].sameStructureAs( [ 2, [ 2, 2 ] ] );  

 // should return false 
[ 1, [ 1, 1 ] ].sameStructureAs( [ [ 2, 2 ], 2 ] );  
[ 1, [ 1, 1 ] ].sameStructureAs( [ [ 2 ], 2 ] );  

// should return true
[ [ [ ], [ ] ] ].sameStructureAs( [ [ [ ], [ ] ] ] ); 

// should return false
[ [ [ ], [ ] ] ].sameStructureAs( [ [ 1, 1 ] ] );

// should return false
[ 1, '[' , ']' ].sameStructureAs([ '[', ']', 1 ]);

[sunhengzhe]

Array.prototype.sameStructureAs = function (other) {
	if (!Array.isArray(other)) {
		return false;
	}
	
	const selfStruc = JSON.stringify(this);
	const otherStruc = JSON.stringify(other);
	
	const formatStruc = (str) => str.replace(/(")[\[\]]\1/g, '').replace(/[^\[\],]/g, '');
	
	return formatStruc(selfStruc) === formatStruc(otherStruc);
};