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                            ## v-if與v-show區別
~~~
<div v-if=""></div>
<div v-show=""></div>
~~~

#### v-if 和 v-show 在頁面都展示為顯示隱藏，但二者有本質的區別。

> `v-if`當值為 true時，顯示div ，當值為false時，該元素消失，代碼也會消失，相當于將代碼刪除了，當在為true時，頁面會重新渲染div;

> `v-show`控制的隱藏出現，只是將css屬性設為了display：none 或block;

`v-if`有更高的切換消耗，不適合做頻繁的切換；  
`v-show`有更高的初始渲染消耗，適合做頻繁的切換；
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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