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                概述:三元運算符是由三部分組成,使用語法如下: A ? B: C <br/> <br/> 如果A部分位布爾值真,返回結果為B。如果布爾值為假的,返回結果即為C <br/> B與C:可以是任意類型數值,表達式等。 <br/> <br/> ## 類數組對象-arguments <h3>作用:arguments 可以在沒有形參的情況下,獲取函數的實參。</h3> <br/> <br/> 類數組對象:【類數組對象不是數組,類似數組,因為只能使用數組的length屬性,不能使用數組的方法】 <br/> <br/> <br/> <br/> 代碼案例如下: ``` function bx(){ var s=0; for(var i=0;i<arguments.length;i++) s= arguments[i]+s; console.log(s); } bx(1,2,3,4,5,6,7,8,9,10); ```
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