深度克隆

Posted 2022-06-01 gzy-tw

 原始对象如下：

 1 let obj = 
 2         name: ‘tw‘,
 3         age: 12,
 4         fit: [‘12‘, ‘45‘, 78],
 5         git: 
 6             name: ‘github‘,
 7             www: ‘http:.‘,
 8             hub: 
 9                 name: "yu"
10             
11         
12     

封装一个函数用来克隆对象：

 1 function deepClone(origin, target) 
 2         let toStr = Object.prototype.toString,
 3             arrStr = ‘[object Array]‘;
 4         for (let prop in origin) 
 5             if (origin.hasOwnProperty(prop)) 
 6                 if (typeof (origin[prop]) == ‘object‘) 
 7                     if (toStr.call(origin[prop]) == arrStr) 
 8                         target[prop] = [];
 9                      else 
10                         target[prop] = ;
11                     
12                     deepClone(origin[prop], target[prop])
13                  else 
14                     target[prop] = origin[prop];
15                 
16             
17         
18