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                字符串參與減乘除取余數,需要隱式轉換參與 字符串:隱士轉換為數字 Number() 空字符串 隱士轉換為0 純數字形式 隱士轉換為對應的數字 非純數字形式的字符串 隱士轉為為NaN <br/><br/> 字符串和加號一起使用,連字符 <br/><br/> 字符串和減,乘,除一起使用時候,自動隱士轉換為數字。 <br/><br/> ``` <script type="text/javascript"> console.log(Number(" ")); console.log(Number("12345")); console.log(Number("你好")); </script> ``` ![](https://img.kancloud.cn/23/e0/23e0bf6986e95ee3e3bcbbbdd14c21c0_713x125.png)
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