聚合物dom重复属性不起作用

Polymer dom-repeat attribute is not working

本文关键字：属性 不起作用 dom 聚合物      更新时间：2023-09-26

我一直在遵循一个教程，并为自己的基本联系人列表进行尝试。当不同的部分不在dom重复模板中时，它们在组件中显示得很好。在使用聚合物网站上的dom重复后，它们不再出现。

index.html

<!doctype html>
<html lang="en">
<head>
  Everything is linked correctly
</head>
<body>
    <aside>
    <contact-list></contact-list>
    </aside>
</body>
</html>

组件.html

    <link rel="import" href="bower_components/polymer/polymer.html">
    <dom-module id="contact-list">
        <style>
            ul {
                list-style: none;
            }
            li {
                display: flex;
                padding: 20px;
            }
            li img {
                border-radius: 50%;
                margin-right: 10px;
            }
        li + li {
            border-top: solid 1px #666;
        }
        h3 {
            margin-right: 0 40px 0 0;
            line-height: 80px;
        }
        li span {
            line-height: 120px;
            margin-left: 20px;
        }
    </style>
    <template>
        <ul>
            <template is="dom-repeat" items="{{contact}}">
                <li>
                    <img src="{{item.img}}" alt="User Photo">
                    <h3>{{item.name}}</h3>
                    <span>{{item.email}}</span>
                </li>
            </template>
        </ul>
    </template>
</dom-module>
<script>
Polymer({
    is: "contact-list",
    ready: funtion() {
        this.contact = [
            {
                name: "Scott",
                email: "ShimyShimy@gmail.com",
                img: "https://randomuser.me/api/portraits/men/45.jpg"
    }
            , {
                name: "Tim",
                email: "DankMemer@gmail.com",
                img: "https://randomuser.me/api/portraits/men/28.jpg"
    }
            , {
                name: "Ben",
                email: "SuperCuck@gmail.com",
                img: "https://randomuser.me/api/portraits/men/68.jpg"
    }
        ]
    }
});
</script>

您在中有一个拼写错误

ready: funtion() {

应该是带有"c"的function。修复它就足够让你的代码为我工作了（见下面的演示）。

<head>
  <base href="https://polygit.org/polymer+1.6.0/components/">
  <script src="webcomponentsjs/webcomponents-lite.min.js"></script>
  <link rel="import" href="polymer/polymer.html">
</head>
<body>
  <contact-list></contact-list>
  <dom-module id="contact-list">
    <style>
      ul {
        list-style: none;
      }
      li {
        display: flex;
        padding: 20px;
      }
      li img {
        border-radius: 50%;
        margin-right: 10px;
      }
      li + li {
        border-top: solid 1px #666;
      }
      h3 {
        margin-right: 0 40px 0 0;
        line-height: 80px;
      }
      li span {
        line-height: 120px;
        margin-left: 20px;
      }
    </style>
    <template>
      <ul>
        <template is="dom-repeat" items="{{contact}}">
          <li>
            <img src="{{item.img}}" alt="User Photo">
            <h3>{{item.name}}</h3>
            <span>{{item.email}}</span>
          </li>
        </template>
      </ul>
    </template>
    <script>
      HTMLImports.whenReady(function() {
        Polymer({
          is: "contact-list",
          ready: function() {
            this.contact = [{
              name: "Scott",
              email: "ShimyShimy@gmail.com",
              img: "https://randomuser.me/api/portraits/men/45.jpg"
            }, {
              name: "Tim",
              email: "DankMemer@gmail.com",
              img: "https://randomuser.me/api/portraits/men/28.jpg"
            }, {
              name: "Ben",
              email: "SuperCuck@gmail.com",
              img: "https://randomuser.me/api/portraits/men/68.jpg"
            }];
          }
        });
      });
    </script>
  </dom-module>
</body>

plunker

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