将javascript数组转换为字符串 [英] Convert javascript array to string

问题描述

我正在尝试遍历值"列表并将其转换为字符串.代码如下:

I'm trying to iterate over a "value" list and convert it into a string. Here is the code:

var blkstr = $.each(value, function(idx2,val2) {                    
     var str = idx2 + ":" + val2;
     alert(str);
     return str;
}).get().join(", ");    

alert() 函数工作正常并显示正确的值.但不知何故，jquery 的 .get() 函数没有获得正确的对象类型并且失败了.我做错了什么?

alert() function works just fine and displays the proper value. But somehow, jquery's .get() function doesn't get the right sort of object and fails. What am I doing wrong?

推荐答案

如果 value 不是普通数组，这样的代码可以正常工作:

If value is not a plain array, such code will work fine:

var value = { "aaa": "111", "bbb": "222", "ccc": "333" };
var blkstr = [];
$.each(value, function(idx2,val2) {                    
  var str = idx2 + ":" + val2;
  blkstr.push(str);
});
console.log(blkstr.join(", "));

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

(输出将出现在开发控制台中)

(output will appear in the dev console)

正如 Felix 所说，each() 只是迭代数组，仅此而已.

As Felix mentioned, each() is just iterating the array, nothing more.

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