[英]Bind object to element attribute in vue.js
Consider 考虑
<ul>
<li v-for="o in objects" v-on:click="click"></li>
</ul>
where objects in something like 像这样的物体
var objects = [
{ derp: 1 },
{ derp: 2 },
];
in my click()
function, I want to get access to o
instance. 在我的
click()
函数中,我想访问o
实例。
function click(event) {
console.log(event.target.myObject);
}
<li v-for="o in objects" v-on:click="click" v-bind:data-myObject="o"></li>
and then getting the object using event.target.getAttribute("data-myObject")
yields a string
, not object
. 然后使用
event.target.getAttribute("data-myObject")
获取对象会产生一个string
,而不是object
。
I can make this work using an index, and then lookup the object from this.$data.objects[index]
. 我可以使用索引来完成这项工作,然后从
this.$data.objects[index]
查找对象。 This seems backward to me, as I expect some way of binding o
instance to the target generated <li>
element. 对我来说,这似乎是倒退,因为我期望将
o
实例绑定到目标生成的<li>
元素的某种方式。
How to do this? 这个怎么做?
You need to pass object in calling function as in below example 您需要在调用函数中传递对象,如下例所示
var app = new Vue({ el:'#app', data:{ myObj: [ { derp: 1 }, { derp: 2 }, ], output:'' }, methods:{ myFunc: function(obj){ this.output = obj; console.log(obj); } } });
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.js"></script> <div id="app"> <ul> <li v-for="o in myObj" v-on:click="myFunc(o)">{{o.derp}}</li> </ul> {{output}} </div>
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