如何使用jQuery创建动态变量? [英] How to create dynamic variables using jquery?

问题描述

我希望动态创建一些jquery变量.在我的代码中，我有一个循环，并且要使用循环值创建一些变量.这是我的示例代码.

I want some jquery variables to be created dynamically. In my code I am having a loop, and with the loop values I want to create some variables. Here is my sample code.

array=["student","parent","employee"]

$.each(user_types, function( index, value ){
  var value+"_type" // this is the type of variable i want to build.
})

我发现了有关 eval 函数的信息.该代码是这样的.

I have found about eval function. That code goes like this.

var type = "type"
eval("var pre_"+type+"= 'The value of dynamic variable, val';");

alert(pre_type) // this gives 'The value of dynamic variable, val' in alert box.

是否有其他替代方法，因为我在编码 .js 文件时不喜欢使用eval函数.

Is there any alternate ways as I have read the eval function is not prefered while coding .js files.

推荐答案

每当您发现自己以变量名使用变量时，您可能都想使用对象文字.用大括号{}创建对象，然后使用方括号表示法设置对象属性键:

Any time you find yourself using a variable in the name of a variable, you probably want to use an object literal. Create the object with curly braces {}, and then set the object property key using square bracket notation:

var user_types = ["student","parent","employee"];
var types = {};

$.each(user_types, function( index, value ){
  types[value] = 'The value of dynamic variable, val';
});

JSFiddle

注意:您尚未对其进行标记，但是我想是因为您已经使用each()来使用jQuery，所以如果我错了，请更正我.

Note: You haven't tagged it, but I assume because you've used each() that you are using jQuery, please correct me if I'm wrong.

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