我怎么可以使用，如果再在其他骨干HBS模板文件，I M使用handelsbar模板

问题描述

我想使用如果当时其他人在哈佛商学院的文件，如果 {{NumLikes}} 比 0 更大然后第一个图像其他2幅图像，所以我怎么可以使用Backbone.js的使用，如果再在其他HBS模板文件。
我使用handelsbar模板。

 ＆LT; D​​IV＆GT;
        ＆LT; DIV CLASS =COMM标签行＆GT;
            ＆LT; D​​IV CLASS =后左面板＆GT;
                ＆LT; D​​IV CLASS =图像容器后＆GT;
                 ＆LT; IMG SRC ={{UserImageURL}}ALT =级=后的图像/＆GT;＆LT; / BR＆GT;
                ＆所述;％如果（{{NumLikes}} = 0）{％GT;
                    ＆LT; IMG SRC =images/myCommunity/[e-mail] =20HEIGHT =19ID =像-BTNNAME =样按钮＆GT;
                ＆LT;％}其他{％GT;
                    ＆LT; IMG SRC =images/myCommunity/[e-mail] =20HEIGHT =19ID =像-BTNNAME =样按钮＆GT;
                ＆LT;％}％GT;
                （{{NumLikes}}）
                ＆LT; / DIV＆GT;
            ＆LT; / DIV＆GT;
            ＆LT; D​​IV CLASS =身体后＆GT;
                ＆LT; H5类=COMM标签，标题为＆GT;
                    ＆LT;跨度类=导航屏幕ID ={{ID}}的风格=文本修饰：下划线;＆GT;
                        {{用户名}}
                    ＆LT; / SPAN＆GT;
                    ＆LT;跨度＆GT;
                          - ＆安培; NBSP;
                    ＆LT; / SPAN＆GT;
                    ＆LT;跨度＆GT;
                       {{format_date时间}}
                    ＆LT; / SPAN＆GT;
                ＆LT; / H5＆GT;
                {{信息}}
                ＆LT; / DIV＆GT;
                ＆LT; D​​IV CLASS =COMM-右面板＆GT;
                ＆LT; A HREF =JavaScript的：无效（0）;类=BTN-遵循NAME =跟随按钮＆GT;遵循＆LT; / A＆GT;
                    ＆LT; A HREF =JavaScript的：无效（0）;类=BTN-评论NAME =注释按钮＆GT; {{NumComments}}  - 注释和LT; / A＆GT;
            ＆LT; / DIV＆GT;
            ＆LT; / DIV＆GT;        ＆LT; / DIV＆GT;
    ＆LT; / DIV＆GT;
 

解决方案

您不需要为这个自定义帮手，标准的 {{＃如果}} 将做正确的事情以零。例如，这个模板：

 ＆LT;脚本ID =T型=文本/ X-车把＆GT;
    {{＃如果一}}一{{其他}}一个{{/ if}个}＆LT;！BR＆GT;
    {{＃如果B}} B {{其他}} B {{/ if}个}＆LT;！BR＆GT;
＆LT; / SCRIPT＆GT;
 

这code：

  VAR T = Handlebars.compile（$（'＃T'）HTML（））;
$（'身体'）。追加（T（{
    答：0，
    A：1
}））;
 

会给你！一个和 B 作为输出。演示：

您的模板应该这样说：

  {{＃如果NumLikes}}
    ＆LT; IMG SRC =images/myCommunity/[e-mail] =20HEIGHT =19ID =像-BTNNAME =样按钮＆GT;
{{其他}}
    ＆LT; IMG SRC =images/myCommunity/[e-mail] =20HEIGHT =19ID =像-BTNNAME =样按钮＆GT;
{{/如果}}
 

i want to use if then else in hbs file, if {{NumLikes}} is greater than 0 then 1st image else 2nd image, so how i can use if then else in hbs template file using backbone.js.I am using handelsbar for template.

<div>
        < div class="comm-tab-row">
            <div class="post-left-panel">
                <div class="post-image-container">
                 <img src="{{UserImageURL}}" alt="" class="post-image"  /></br>     
                <% if ({{NumLikes}} = 0) { %>
                    <img src="images/myCommunity/[e-mail]" width="20" height="19" id="like-btn" name = "like-Button" >               
                <% } else { %>
                    <img src="images/myCommunity/[e-mail]" width="20" height="19" id="like-btn" name = "like-Button" >
                <%  } %>            
                ({{NumLikes}})          
                </div>
            </div>      
            <div class="post-body">
                <h5 class="comm-tab-heading">
                    <span class="navigate-screen" id="{{Id}}" style="text-decoration:underline;">
                        {{UserName}}
                    </span>
                    <span>
                         - &nbsp;
                    </span>
                    <span>
                       {{format_date Time ""}}
                    </span>
                </h5>
                {{Message}}
                </div>
                <div class="comm-right-panel">
                <a href="javascript:void(0);" class="btn-follow" name = "follow-button">FOLLOW</a>
                    <a href="javascript:void(0);" class="btn-comment" name = "comment-button">{{NumComments}} - COMMENT</a>
            </div>  
            </div>

        </div>
    </div>

解决方案

You don't need a custom helper for this, the standard {{#if}} will do the right thing with a zero. For example, this template:

<script id="t" type="text/x-handlebars">
    {{#if a}}a{{else}}!a{{/if}}<br>
    {{#if b}}b{{else}}!b{{/if}}<br>
</script>

and this code:

var t = Handlebars.compile($('#t').html());
$('body').append(t({
    a: 0,
    b: 1
}));

will give you !a and b as output. Demo: http://jsfiddle.net/ambiguous/tUAyZ/

Your template should say this:

{{#if NumLikes}}
    <img src="images/myCommunity/[e-mail]" width="20" height="19" id="like-btn" name = "like-Button" >               
{{else}}
    <img src="images/myCommunity/[e-mail]" width="20" height="19" id="like-btn" name = "like-Button" >
{{/if}}

这篇关于我怎么可以使用，如果再在其他骨干HBS模板文件，I M使用handelsbar模板的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！