如何在流星中获得自定义属性值？

Question

如何获取被检查的“key”属性的值???

Html代码：

<input type="checkbox" class="each-tab-1" key="some1" value="456">
<input type="checkbox" class="each-tab-1" key="some1" value="789">
<input type="checkbox" class="each-tab-1" key="some2" value="890">
<input type="checkbox" class="each-tab-1" key="some2" value="901">
<input type="checkbox" class="each-tab-1" key="some1" value="012">

JS代码：

'click .action' : function(event, template){
    $("input[class^=each]:checked").each(function(){
        console.log(this.value);
        console.log(this.attr('key')); **// giving error "Uncaught TypeError: undefined is not a function"**
    });
}

Answer 1

用$（this）

封装底部

$("input[class^=each]:checked").each(function(){
    console.log(this.value);
    console.log($(this).attr('key')); // giving error "Uncaught TypeError: undefined is not a function"**
});