Vue.js 未捕获的类型错误:this.list.$remove 不是函数 [英] Vue.js Uncaught TypeError: this.list.$remove is not a function

问题描述

我不断收到同样的错误，即 this.list.$remove 不是函数.我相信它与 html 标记有关，但不确定.任何人都可以指出我正确的方向吗?过去 2 天我一直在挣扎.

 Vue.component('cart-co', {模板: '#cart-template',数据:函数(){返回 {列表: []}},准备好:函数(){$.getJSON('购物车/内容', 函数(数据) {this.list = 数据；}.bind(this));},方法: {删除项目:功能(项目){控制台日志(项目)；this.list.$remove(item);}}});新的 Vue({el: '身体',});

这是我的购物车部分:

<模板 id="购物车模板"><div class="cart-content-wrapper"><div class="cart-content" ><ul v-if="list" class="scroller" style="height: 250px;"><li v-for="列表中的项目"><a href="item.html"><img src="assets/temp/cart-img.jpg" alt="" width="37" height="34"></a><span class="cart-content-count">@{{ item.quantity }}</span><strong><a href="item.html">@{{ item.name }}</a></strong><em>@{{ item.price |货币 }}<a href="#" class="del-goods" v-on:click="removeItem(item)"><i class="fa fa-times"></i></＞<ul v-else class="scroller" style="height: 250px;"><li>购物车是空的</li><div class="text-right"><a href="{{ route('cart.show-cart') }}" class="btn btn-default">查看购物车</a><a href="checkout.html" class="btn btn-primary">结帐</a>

</模板>

解决方案

如果从 $.getJSON() 调用返回的数据是一个对象(购物车中的每个项目都是一个键值对)，您可以按如下方式修改代码以处理删除项目.

假设数据看起来像这样:

<代码>{"item1": { "name": "Name 1", "quantity": 1, "price": 10 },"item2": { "name": "Name 2", "quantity": 1, "price": 10 },"item3": { "name": "Name 3", "quantity": 1, "price": 10 }};

在删除链接中传递您要删除的项目的密钥:

<a href="#" class="del-goods" v-on:click="removeItem($key)"><i class="fa fa-times"><;/i></a>

将您的 removeItem() 方法更改为如下所示:

removeItem: function(key) {Vue.delete(this.list, key);}

这使用 Vue.delete 方法删除属性(并确保视图做出反应到变化).

I keep getting the same error that this.list.$remove is not a function. I believe it has something to do with the html markup but not sure. Can anyone point me in the right direction? I have been struggling for the last 2 days.

 Vue.component('cart-co', {

  template: '#cart-template',

  data: function() {
    return {
      list: []
    }
  },

  ready: function() {
    $.getJSON('cart/content', function(data) {
      this.list = data;
    }.bind(this));
  },

  methods: {
    removeItem: function(item) {
      console.log(item);
      this.list.$remove(item);
    }
  }
});


new Vue({
  el: 'body',
});

Here is my cart section:

<cart-co></cart-co>

<template id="cart-template">
  <div class="cart-content-wrapper">
    <div class="cart-content" >
      <ul v-if="list" class="scroller" style="height: 250px;">

        <li v-for="item in list">
          <a href="item.html"><img src="assets/temp/cart-img.jpg" alt="" width="37" height="34"></a>
          <span class="cart-content-count">@{{ item.quantity }}</span>
          <strong><a href="item.html">@{{ item.name }}</a></strong>
          <em>@{{ item.price | currency }}</em>
          <a href="#" class="del-goods" v-on:click="removeItem(item)"><i class="fa fa-times"></i></a>
        </li>

      </ul>
      <ul v-else class="scroller" style="height: 250px;">
        <li>Shopping cart is empty</li>
      </ul>
      <div class="text-right">
        <a href="{{ route('cart.show-cart') }}" class="btn btn-default">View Cart</a>
        <a href="checkout.html" class="btn btn-primary">Checkout</a>
      </div>
    </div>
  </div>
</template>

解决方案

If the data coming back from your $.getJSON() call is an object (with each item in the cart being a key value pair), you can modify your code as follows to handle removing items.

Assumming data looks something like this:

{
   "item1": { "name": "Name 1", "quantity": 1, "price": 10 },
   "item2": { "name": "Name 2", "quantity": 1, "price": 10 },
   "item3": { "name": "Name 3", "quantity": 1, "price": 10 }
};

Pass the key of the item you want to remove in your delete link:

<a href="#" class="del-goods" v-on:click="removeItem($key)"><i class="fa fa-times"></i></a>

Change your removeItem() method to something like this:

removeItem: function(key) {
  Vue.delete(this.list, key);
}

This uses the Vue.delete method to delete the property (and ensures the view reacts to the change).

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