JavaScript weakMap。set（）方法-yiteyi-C++库

下面是一个例子 懦夫。set（） 方法

null

例子：

                         <script>                       
                                                 function                                     gfg() {                       
                                                 const weakmap1 =                                     new                                     WeakMap();                       
                                   
                                                 const key1 = {};                       
                                                 const key2 = {};                       
                                                 const key3 = {};                       
                                   
                                                 weakmap1.set(key1,                                     'G'                                     );                       
                                                 weakmap1.set(key2,                                     'F'                                     );                       
                                                 weakmap1.set(key3,                                     'G'                                     );                       
                                   
                                                 document.write(weakmap1.get(key1)                       
                                                 +weakmap1.get(key2)                       
                                                 +weakmap1.get(key3));                       
                                                 }                       
                                                 gfg();                       
                         </script>                       

输出：
```
GFG
```

这个 懦夫。set（） 是JavaScript中的一个内置函数，用于将具有特定键和值的新元素设置为WeakMap对象。

语法：

weakMap.set(key, value);

参数： 它接受参数“key”，它是要设置到WeakMap对象的元素的键，参数“value”是要设置到WeakMap对象的元素的值。

返回值： 它返回WeakMap对象。

例子：

Input: weakmap1.get(key1)
Output: GeeksForGeeks

显示此函数工作的JavaScript代码： 代码#1：

                     <script>                   
                             
                                         // creating WeakMap() object                   
                                         const weakmap1 =                               new                               WeakMap();                   
                             
                                         // Creating some keys                   
                                         const key1 = {};                   
                                         const key2 = {};                   
                             
                                         // Setting key and value to the object.                   
                                         weakmap1.set(key1,                               'GeeksForGeeks'                               );                   
                                         weakmap1.set(key2,                               'gfg'                               );                   
                             
                                         // Returning the set values                   
                                         document.write(weakmap1.get(key1) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key2));                   
                             
                     </script>                   

输出：

GeeksForGeeks
gfg

代码#2：

                     <script>                   
                             
                                         // creating WeakMap() object                   
                                         const weakmap1 =                               new                               WeakMap();                   
                             
                                         // Creating some keys                   
                                         const key1 = {};                   
                                         const key2 = {};                   
                                         const key3 = {};                   
                                         const key4 = {};                   
                                         const key5 = {};                   
                                         const key6 = {};                   
                             
                                         // Setting key and value to the object.                   
                                         weakmap1.set(key1,                               'GeeksForGeeks'                               );                   
                                         weakmap1.set(key2,                               'gfg'                               );                   
                                         weakmap1.set(key3,                               'GfG is a cse portal'                               );                   
                                         weakmap1.set(key4,                               '12345'                               );                   
                                         weakmap1.set(key5,                               '@#$%'                               );                   
                                         weakmap1.set(key6,                               '1.34'                               );                   
                             
                                         // Returning the set values                   
                                         document.write(weakmap1.get(key1) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key2) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key3) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key4) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key5) +                               "<br>"                               );                   
                                         document.write(weakmap1.get(key6));                   
                             
                     </script>                   

输出：

GeeksForGeeks
gfg
GfG is a cse portal
12345
@#$%
1.34

支持的浏览器：

谷歌Chrome 36及以上版本
边缘12及以上
Firefox 6及以上版本
Internet Explorer 11及以上版本
Opera 23及以上
Safari 8及以上

文章版权归作者所有，未经允许请勿转载。

THE END

Javascript