将click事件绑定到类中的方法 [英] Bind a click event to a method inside a class
本文介绍了将click事件绑定到类中的方法的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在我的对象的构造函数中,我创建了一些span标记,我需要将它们引用到同一个对象的方法。
In the constructor of my object, I create some span tag and I need to refers them to a method of the same object.
这是我的一个示例代码:
Here is an example of my code:
$(document).ready(function(){
var slider = new myObject("name");
});
function myObject(data){
this.name = data;
//Add a span tag, and the onclick must refer to the object's method
$("body").append("<span>Test</span>");
$("span").click(function(){
myMethod(); //I want to exec the method of the current object
});
this.myMethod = myMethod;
function myMethod(){
alert(this.name); //This show undefined
}
}
这个调用该方法的代码,但它不是对象的引用(this.name show undefined)
我该如何解决?
With this code the method is called, but it is not a reference to the object (this.name show undefined) How can I resolve that?
非常感谢!
推荐答案
实现这一目标的一种简单方法:
One simple way to achieve that:
function myObject(data){
this.name = data;
// Store a reference to your object
var that = this;
$("body").append("<span>Test</span>");
$("span").click(function(){
that.myMethod(); // Execute in the context of your object
});
this.myMethod = function(){
alert(this.name);
}
}
另一种方法,使用 $。proxy
:
Another way, using $.proxy
:
function myObject(data){
this.name = data;
$("body").append("<span>Test</span>");
$("span").click($.proxy(this.myMethod, this));
this.myMethod = function(){
alert(this.name);
}
}
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