如何獲取函數參數值？

Question

我想通過使用參數[i]循環所有函數參數值來簡化電子郵件驗證，但返回「undefined」。

function checkInputRequired(companyNameValue, contactNameValue, publisherEmailValue, publisherEmailConfirmValue) 
    { 
     // The arguments object is an Array-like object corresponding to the arguments passed to a function. 
     for (var i = 0; i < arguments.length; i++) 
     { 
      // print out 4 undefined 
      console.log(arguments[i]); 
     } 
    } 

Answer 1

檢查了這一點

function checkInputRequired(companyNameValue, contactNameValue, publisherEmailValue, publisherEmailConfirmValue) 
    { 
     // The arguments object is an Array-like object corresponding to the arguments passed to a function. 
     for (var i = 0; i < arguments.length; i++) 
     { 
      // print out 4 undefined 
      console.log(arguments[i]); 
     } 
    } 

checkInputRequired('ddd','bbbbb','sssss','dddddddddd'); 

當你調用該函數將顯示值，否則顯示未定義的默認值。