js对象克隆, 深复制.

亲测有效:

//对象克隆
function clone(obj) {
// Handle the 3 simple types, and null or undefined
if (null == obj || "object" != typeof obj) return obj; // Handle Date
if (obj instanceof Date) {
var copy = new Date();
copy.setTime(obj.getTime());
return copy;
} // Handle Array
if (obj instanceof Array) {
var copy = [];
var len = obj.length;
for (var i = 0; i < len; ++i) {
copy[i] = clone(obj[i]);
}
return copy;
} // Handle Object
if (obj instanceof Object) {
var copy = {};
for (var attr in obj) {
if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);
}
return copy;
} throw new Error("Unable to copy obj! Its type isn't supported.");
}
上一篇:css中的块级和内联元素


下一篇:什么是css块级元素和内联元素