简易deepClone

[lvleihere]

简易深克隆, 没考虑Date、Regexp、Error

• 确定你的原始数据对象中的属性值没有 function 或者 undefined, 你可以使用常规的 JSON.parse(JSON.stringify()) 进行深克隆。

/**
 * 简易深度克隆
 * @param {*} originVal - 原始数据
 */
const deepClone = originVal => {
    if (typeof originVal !== 'object') {
        return originVal;
    }
    const hasDeepCloned = originVal.constructor === Object ? {} : [];
    for (const key in originVal) {
        if (originVal.hasOwnProperty(key)) {
            const val = originVal[key];
            hasDeepCloned[key] = typeof val === 'object' ? deepClone(val) : val;
        }
    }
    return hasDeepCloned;
}


const originData = {
    name: 'thunder',
    favor: [{
        one: 'ball'
    }]
};

const newData = deepClone(originData);
newData.name = 'modified data';
newData.favor[0].one = 'modified ball';

console.log(originData); // { name: 'thunder', favor: [ { one: 'ball' } ] }
console.log(newData); // { name: 'modified data', favor: [ { one: 'modified ball' } ] }