带有{^ {if}}的jsviews错误 [英] Possible jsviews bug with {^{if}}

问题描述

在下面的示例中，如果我添加几个来宾，然后删除 1st 来宾，则即使Guest []不为空，整个来宾表也将消失并且不会再出现.这里的{^ {if}}或我的代码有问题吗? (我正在使用提交34)

In the example below, if I add several guests and then remove the 1st guest the entire guest table disappears and never reappears even though the Guest[] in not empty. Is there something wrong with {^{if}} here or my code? (I'm using commit 34)

<div id="frm-reg"></div>

<script id='jsr-registration' type='text/x-jsrender'>

    <p><button id="btn-addGuest">Add Guest</button></p>

    {^{if Guests.length}}
        <table>
            <tr>
                <th>First Name</th> 
                <th>Last Name</th>
                <th>Age</th>
                <th></th>
            </tr>
            {^{for Guests}}
                <tr>
                    <td><input data-link="FirstName" type="text" /></td>
                    <td><input data-link="LastName" type="text" /></td>
                    <td><input data-link="Age" type="text" /></td>
                    <td><button class="btn-remove">Remove</button></td>
                </tr>
            {{/for}}
        </table>
    {{/if}}
</script>

<script>
    var model={"CampID":3,"FirstName":"a","LastName":"b","Guests":[]};

    $.templates({regTmpl: "#jsr-registration"});
    $.link.regTmpl("#frm-reg", model)
        .on("click", ".btn-remove", function() 
        {
            $.observable(model.Guests).remove( $.view(this).index, 1 );
            return false;
        });

    $("#btn-addGuest").click(function()
    {
        $.observable(model.Guests).insert(model.Guests.length, {FirstName:"", LastName:"", Age:""});
        return false;
    });
</script>

推荐答案

这是在标记中没有<tbody>标记的结果.

This is the result of not having a <tbody> tag in the markup.

当在JsRender模板中使用<table>标记(与JsViews数据绑定一起使用)时，您需要记住始终包含<tbody>标记.无论如何，浏览器都会插入一个，然后JsViews解析将以不正确的元素深度信息结束.

When you use <table> tags in JsRender templates, used with JsViews data-binding, you need to remember always to include a <tbody> tag. The browser will insert one anyway, and JsViews parsing will then end up with incorrect element depth information.

为此，我将在JsViews解析器中添加一条警告错误消息.

I will add a warning error message in the JsViews parser for this.

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