如何在javascript中将对象转换为自定义字符串? [英] How do I convert an object to a custom string in javascript?

问题描述

我想重载对象到字符串的转换，因此下面的示例将输出字符串"TEST"而不是"[object Object]".我该怎么做?

I want to overload the conversion of an object to a string, so that the following example would output the string "TEST" instead of "[object Object]". How do I do this?

function TestObj()
{
    this.sValue = "TEST";
}
function Test()
{
    var x = new TestObj();
    document.write(x);
}

推荐答案

您应该重载 toString 方法...

You should overload the toString method ...

TestObj.prototype.toString = function(){return this.sValue;}

http://jsfiddle.net/Ktp9E/

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