如何獲取流星中的自定義屬性值？

Question

如何獲得被檢查的「key」屬性的值？

HTML代碼：

<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代碼：

'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

只是包裝底部這跟$（本）

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