试图在JavaScript的对象属性工作动态 [英] trying to work dynamically with object properties in javascript

问题描述

我想弄清楚，如果这是可行的，但充其量得到语法错误。所以，我想知道，如果它是在所有可能的。

I'm trying to sort out if this is plausible but have gotten syntax errors at best. So I am wondering if it is at all possible.

我已经是一个对象（例如只）

What I have is an object (example only)

var myObj = {
       something1_max:50,
       something1_enabled:false,
       something1_locked:true,
       something2_max:100,
       something2_enabled:false,
       something2_locked:true,
       something3_max:10,
       something3_enabled:true,
       something3_locked:true
    }

和我想通过一个函数做的是做这样的事情再次例如总结的事情了。

and what I want to do through a function is do something like again for example to sum things up..

function displayDetails(theScope, obj)
{
   console.log(obj.[theScope]_max);
}

(function(){displayDetails('something3', myObj);})()

所以，当 displayDetails（）叫什么范围内我能在这个例子中看到的最大为该范围。在控制台日志的例子我希望看到 10

so when displayDetails() is called whatever the scope I can see in this example the max for that scope. In the console log for the example I would hope to see 10

推荐答案

JavaScript对象的属性总是可以作为字符串使用进行访问的架的语法，即对象['财产'] 。这，当然，这意味着你可以动态地构建字符串：

Properties of JavaScript objects can always be accessed as a string using the bracket syntax, ie object['property']. This, of course, means you can build that string dynamically:

console.log(obj[theScope + '_max']);

这篇关于试图在JavaScript的对象属性工作动态的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！