You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
24 lines
658 B
24 lines
658 B
1 year ago
|
// 判断arr是否为一个数组，返回一个bool值
|
||
|
|
function isArray (arr) {
|
||
|
|
return Object.prototype.toString.call(arr) === '[object Array]';
|
||
|
|
}
|
||
|
|
|
||
|
|
// 深度克隆
|
||
|
|
function deepClone (obj) {
|
||
|
|
// 对常见的“非”值，直接返回原来值
|
||
|
|
if([null, undefined, NaN, false].includes(obj)) return obj;
|
||
|
|
if(typeof obj !== "object" && typeof obj !== 'function') {
|
||
|
|
//原始类型直接返回
|
||
|
|
return obj;
|
||
|
|
}
|
||
|
|
var o = isArray(obj) ? [] : {};
|
||
|
|
for(let i in obj) {
|
||
|
|
if(obj.hasOwnProperty(i)){
|
||
|
|
o[i] = typeof obj[i] === "object" ? deepClone(obj[i]) : obj[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return o;
|
||
|
|
}
|
||
|
|
|
||
|
|
export default deepClone;
|