如何迭代Handlebars中的对象数组?

你可以通过 this 到每个块。请参见此处: http://jsfiddle.net/yR7TZ/1/

{{#each this}}
    <div class="row"></div>
{{/each}}

这把小提琴兼有这两者 each 和直接json。 http://jsfiddle.net/streethawk707/a9ssja22/ .

下面是迭代数组的两种方法。一种是直接json传递,另一种是在传递给内容持有者时命名json数组。

Eg1:下面的示例直接调用small_data变量中的json键(data)。

在html中使用以下代码:

<div id="small-content-placeholder"></div>

以下内容可以放在html的页眉或正文中:

<script id="small-template" type="text/x-handlebars-template">
    <table>
        <thead>
            <th>Username</th>
            <th>email</th>
        </thead>
        <tbody>
            {{#data}}
                <tr>
                    <td>{{username}}
                    </td>
                    <td>{{email}}</td>
                </tr>
            {{/data}}
        </tbody>
    </table>
</script>

以下文件已准备就绪:

var small_source   = $("#small-template").html();
var small_template = Handlebars.compile(small_source);

下面是json:

var small_data = {
            data: [
                {username: "alan1", firstName: "Alan", lastName: "Johnson", email: "alan1@test.com" },
                {username: "alan2", firstName: "Alan", lastName: "Johnson", email: "alan2@test.com" }
            ]
        };

最后将json附加到内容持有者:

$("#small-content-placeholder").html(small_template(small_data));

Eg2:使用每个迭代。

考虑下面的json。

var big_data = [
            {
                name: "users1",
                details: [
                    {username: "alan1", firstName: "Alan", lastName: "Johnson", email: "alan@test.com" },
                    {username: "allison1", firstName: "Allison", lastName: "House", email: "allison@test.com" },
                    {username: "ryan1", firstName: "Ryan", lastName: "Carson", email: "ryan@test.com" }
                  ]
            },
            {
                name: "users2",
                details: [
                    {username: "alan2", firstName: "Alan", lastName: "Johnson", email: "alan@test.com" },
                    {username: "allison2", firstName: "Allison", lastName: "House", email: "allison@test.com" },
                    {username: "ryan2", firstName: "Ryan", lastName: "Carson", email: "ryan@test.com" }
                  ]
            }
      ];

将json传递给内容持有者时,只需按以下方式命名:

$("#big-content-placeholder").html(big_template({big_data:big_data}));

模板如下所示:

<script id="big-template" type="text/x-handlebars-template">
    <table>
        <thead>
            <th>Username</th>
            <th>email</th>
        </thead>
        <tbody>
            {{#each big_data}}
                <tr>
                    <td>{{name}}
                            <ul>
                                {{#details}}
                                    <li>{{username}}</li>
                                    <li>{{email}}</li>
                                {{/details}}
                            </ul>
                    </td>
                    <td>{{email}}</td>
                </tr>
            {{/each}}
        </tbody>
    </table>
</script>

我的意思是 template() 呼叫

您只需要将结果作为对象传递。所以不要打电话

var html = template(data);

做

var html = template({apidata: data});

和使用 {{#each apidata}} 在模板代码中

演示时间: http://jsfiddle.net/KPCh4/4/
( 去掉了一些剩菜 if 崩溃的代码 )

Handlebars可以使用数组作为上下文。您可以使用 . 作为数据的根。因此,您可以使用 {{#each .}} .

var data = [
  {
    Category: "General",
    DocumentList: [
      {
        DocumentName: "Document Name 1 - General",
        DocumentLocation: "Document Location 1 - General"
      },
      {
        DocumentName: "Document Name 2 - General",
        DocumentLocation: "Document Location 2 - General"
      }
    ]
  },
  {
    Category: "Unit Documents",
    DocumentList: [
      {
        DocumentName: "Document Name 1 - Unit Documents",
        DocumentList: "Document Location 1 - Unit Documents"
      }
    ]
  },
  {
    Category: "Minutes"
  }
];

$(function() {
  var source = $("#document-template").html();
  var template = Handlebars.compile(source);
  var html = template(data);
  $('#DocumentResults').html(html);
});

.row {
  border: 1px solid red;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<div id="DocumentResults">pos</div>
<script id="document-template" type="text/x-handlebars-template">
  <div>
  {{#each .}}
    <div class="row">
      <div class="col-md-12">
        <h2>{{Category}}</h2>
        {{#DocumentList}}
        <p>{{DocumentName}} at {{DocumentLocation}}</p>
        {{/DocumentList}}
      </div>
    </div>
  {{/each}}
  </div>
</script>

我有一个类似的问题,我把整个物体都放进去了 this 但该值在执行时显示 #each .

解决方案: 我像这样重新构建对象数组:

let list = results.map((item)=>{
    return { name:item.name, author:item.author }
});

然后在模板文件中:

{{#each list}}
    <tr>
        <td>{{name }}</td>
        <td>{{author}}</td>      
    </tr>
{{/each}} 

使用 this 和 {{this}} 。请参见node.js中的以下代码:

var Handlebars= require("handlebars");
var randomList= ["James Bond", "Dr. No", "Octopussy", "Goldeneye"];
var source= "<ul>{{#each this}}<li>{{this}}</li>{{/each}}</ul>";
var template= Handlebars.compile(source);
console.log(template(randomList));

控制台日志输出:

<ul><li>James Bond</li><li>Dr. No</li><li>Octopussy</li><li>Goldeneye</li></ul>