Question

我需要将参数传递给addEventListener的回调处理程序。我尝试了this，但它在 for 循环中无效。这是我的代码：

var view = Ti.UI.createView({
    //configuration here.
});
for(var i=0,ilen=response.length; i<ilen; i++){
    var thisObj = response[i];
    var btnCareer = Ti.UI.createButton({
        //configuration here
    });

    var careerID = thisObj.CareerID;
    btnCareer.addEventListener('click', function(){ 
                                                            bh.logic.career.CareerClick(careerID);
                                    });
    view.add(btnCareer);
}

我得到的是最新价值。

有什么办法吗？

Answer 1

如果没有看到[]包含什么样的响应，并且如果businessID是线性的等等，则以下代码的目的是建议将careerID添加为实际的 id 按钮的属性;可引用的东西。

我也不知道你正在开发什么平台;-)所以，给下面的一个旋转，如果一切都失败了，请查看：

The Button API by clicking here

HTH !!

var view = Ti.UI.createView({
    //configure the view here.
});

for(var i=0,ilen=response.length; i<ilen; i++){
    var thisObj = response[i];
    var careerID = thisObj.CareerID;
    var btnCareer = Ti.UI.createButton({
        //configuration here
        id:careerID // THIS GIVES THIS BUTTON AN ID TO MAP BY EVENT LISTENER ONCLICK
    });
    btnCareer.addEventListener('click', function(e){
        if ( e.source.id !== null ) {  // Be good and check for null values
            var careerIDValue = e.source.id;
            /* e is this function, source looks at id value for the button you just
             * created as it attaches the eventListener to the most current button
             * object and keeps the button unique because you've given it an id: blah
             * value that can be sussed out
             */ 
            bh.logic.career.CareerClick(careerIDValue);
        } else {
            alert('NULL ID FOUND!  ARGH! ' + e.source.id);
        }
    });
    view.add(btnCareer);
}

Answer 2

我终于得到了答案here。基本上，我应该记住，javascript是松散耦合的语言。

将参数传递给钛中的addeventlistener

2 个答案: