24 lines
658 B
JavaScript
24 lines
658 B
JavaScript
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// 判断arr是否为一个数组，返回一个bool值
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function isArray (arr) {
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return Object.prototype.toString.call(arr) === '[object Array]';
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}
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// 深度克隆
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function deepClone (obj) {
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// 对常见的“非”值，直接返回原来值
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if([null, undefined, NaN, false].includes(obj)) return obj;
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if(typeof obj !== "object" && typeof obj !== 'function') {
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//原始类型直接返回
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return obj;
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}
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var o = isArray(obj) ? [] : {};
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for(let i in obj) {
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if(obj.hasOwnProperty(i)){
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o[i] = typeof obj[i] === "object" ? deepClone(obj[i]) : obj[i];
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}
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}
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return o;
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}
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export default deepClone;
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