我有一个骨干模型这样
var PeopleModel = Backbone.Model.extend({
defaults: {
"people": [
{ "username": "alan", "firstName": "Alan", "lastName": "Johnson", "phone": "1111", "email": "alan@test.com" },
{ "username": "allison", firstName: "Allison", "lastName": "House", "phone": "2222", "email": "allison@test.com" },
{ "username": "ryan", "firstName": "Ryan", "lastName": "Carson", "phone": "3333", "email": "ryan@test.com" },
{ "username": "ed", "firstName": "Edward", "lastName": "Feild", "phone": "4444", "email": "ed@test.com" },
{ "username": "phil", "firstName": "Philip", "lastName": "Doom", "phone": "5555", "email": "phil@test.com" },
{ "username": "gerald", "firstName": "Gerald", "lastName": "Butler", "phone": "6666", "email": "gerald@test.com" }
],
"company": {"name": "Random Corp."},
"country": "England"
}
});
以下是我的模板
<script id="people-template" type="text/x-handlebars-template">
{{#each people}}
{{> person}}
{{/each}}
</script>
<script id="person-partial" type="text/x-handlebars-template">
<div class="person">
<h2>{{fullName}} </h2>
<div class="phone">{{phone}}</div>
<div class="email"><a href="mailto:{{email}}">{{email}}</a></div>
</div>
这是我如何实现使用handlebars.js部分。
我的问题
1.Do我们类似的事情,我的意思是柜面underscore.js模板引擎的谐音?
2.如果那么我们如何实现underscore.js模板引擎部分
不,是下划线的模板没有本地部分支持。 但是,你可以把几乎你想里面的任何JavaScript <% ... %>
; 特别是,你可以调用自己的函数,所以你可以没有太大的困难增加一些局部十岁上下。 你可以有这样的一个模板:
<script id="people-template" type="text/x-handlebars-template">
<% _(people).each(function(person) { %>
<%= partial('person', person) %>
<% }) %>
</script>
然后添加一个partial
函数window
:
window.partial = function(which, data) {
var tmpl = $('#' + which + '-partial').html();
return _.template(tmpl)(data);
};
演示: http://jsfiddle.net/ambiguous/HDuj5/9/
这是不是很光滑,漂亮{{> ... }}
在车把不得不强调的模板周围的JavaScript本身就是一个非常薄的包装,并且有些限制你。 您可以使用命名空间避免把事情直接在window
或者您可以使用{variable: ...}
选项_.template
和包装,以建立您的标准助手。
或者避免使用全球范围内,你可以在全局模板助手混合就像这样:
(function() {
var originalUnderscoreTemplateFunction = _.template;
var templateHelpers = {};
_.mixin({
addTemplateHelpers : function( newHelpers ) {
_.extend( templateHelpers, newHelpers );
},
template : function(text, data, settings) {
// replace the built in _.template function with one that supports the addTemplateHelpers
// function above. Basically the combo of the addTemplateHelpers function and this new
// template function allows us to mix in global "helpers" to the data objects passed
// to all our templates when they render. This replacement template function just wraps
// the original _.template function, so it sould be pretty break-resistent moving forward.
if( data )
{
// if data is supplied, the original _.template function just returns the raw value of the
// render function (the final rentered html/text). So in this case we just extend
// the data param with our templateHelpers and return raw value as well.
_.defaults( data, templateHelpers ); // extend data with our helper functions
return originalUnderscoreTemplateFunction.apply( this, arguments ); // pass the buck to the original _.template function
}
var template = originalUnderscoreTemplateFunction.apply( this, arguments );
var wrappedTemplate = function( data ) {
_.defaults( data, templateHelpers );
return template.apply( this, arguments );
};
return wrappedTemplate;
}
}
}
然后调用
_.addTemplateHelpers( {
partial : function() {
return _.template(
$('#' + which + '-partial').html(),
data
);
}
} );
下面是该链接下划线混入 GitHub上。
我认为这是类似于Dave的答案,但也许需要更少的代码:
function partialTemplate(origTemplate, partialValues){
return function(values){
return origTemplate(_.defaults(values, partialValues));
};
}
实例:
var t = _.template('<%= val1 %>,<%= val2 %>'); // original template requiring 2 values
var pt = partialTemplate(t, {val1:1}); // partial template with 1 value pre-populated
pt({val2:2}); // returns '1,2'
pt({val2:3}); // returns '1,3'