javascript 有没有办法传递上下文以在 jQuery 中绑定？

Is there a way to pass context to bind in jQuery?

提问by Jauzsika

I'm inside a javascript object (vr roxx :) ), but every time I do an event bind with jQuery I have to include the main object instance's context through the data parameter in order to work with it. Isn't there an easy/neat way to do this in jQuery?

我在一个 javascript 对象中（vr roxx :)），但是每次我使用 jQuery 进行事件绑定时，我都必须通过 data 参数包含主对象实例的上下文才能使用它。在 jQuery 中没有一种简单/整洁的方法来做到这一点吗？

var oink = 
{
    pig: null,

    options:    
    {
        showPigMom: 0
    },

    init: function(pigObj)
    {

        //Show the pigmom
        $(this.doc).bind('keyup click', {o: this}, function(e)
        {
            var o = e.data.o;
            if (o.options.showpath)
                o.doWhatever();
        });

    ...

回答by Karolis

I use the $.proxy()function

我用这个$.proxy()功能

init: function(pigObj)
{
    //Show the pigmom
    $(this.doc).bind('keyup click', $.proxy(function(e) {
        if (this.options.showpath)
            this.doWhatever();
        $(e.currentTarget).text(); // use this to access the clicked element
    }, this));
}

回答by beefyhalo

init: function() {
    var self = this;
    $(this.doc).bind('keyup click', function() {
        if (self.options.showpath) self.doWhatever();
    });
}

回答by Max Podriezov

init: function() {
    $(this.doc).bind('keyup click', function() {
       if (this.options.showpath) this.doWhatever();
       $(e.currentTarget).text(); // use this to access the clicked element
    }.bind(this))
}