Knockout.js通过click事件获取元素ID [英] knockoutjs get element id through click event

问题描述

我正在使用基因敲除js，目前在我的视图中看起来像这样:

I'm using knockoutjs and I currently have something in my view that looks like this:

<img id="myTab1" data-bind="click: pressedTab.bind($data, '#myTab1')" src="images/image1.png"></img>

这使我可以在视图模型中获取元素ID:

This allows me to get the element ID in my view model:

pressedTab = function(tab){
    console.log("Element ID: " + tab);
}

这样写:

元素ID:#myTab1

Element ID: #myTab1

但是，在click事件中发送img id的名称太重复了.有没有一种方法可以发送img id而不显式地重写它?

However, it's too repetitive to send the name of the img id in the click event. Is there a way to send the img id without explicitly re-writing it?

推荐答案

您实际上可以通过KO单击处理程序访问事件对象.

You actually can get access to the event object via a KO click handler.

<button id="somebutton" data-bind="click: log">Click Me </button>

var ViewModel = function() {
    this.log = function(data, event) {
        console.log("you clicked " + event.target.id);
    }
};
ko.applyBindings(new ViewModel());

http://jsfiddle.net/madcapnmckay/e8JPT/

希望这会有所帮助.

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