juicer是一个javascript轻量级模板引擎。
编译模板并根据数据立即渲染出结果
1 juicer(tpl, data);
仅编译模板暂不渲染,返回一个可重用的编译后的函数
1 var compiled_tpl = juicer(tpl);
根据给定的数据对之前编译好的模板进行渲染
1 var complied_tpl = juicer(tpl); 2 var html = complied_tpl.render(data);
注册/注销自定义函数(对象)
1 juicer.register(‘function_name’, function); 2 juicer.unregister(‘function_name’);
默认参数配置
1 { 2 cache: true [false]; 3 script: true [false]; 4 error handling: true [false]; 5 detection: true [false]; 6 }
修改默认配置,逐条修改
1 juicer.set('cache', false);
修改默认配置,批量修改
1 juicer.set({ 2 'script': false, 3 'cache': false 4 })
Juicer 默认会对编译后的模板进行缓存,从而避免同一模板多次数据渲染时候重复编译所耗的时间, 如无特殊需要,强烈不建议关闭默认参数中的 cache,这么做将会令 Juicer 缓存失效从而降低性能.
* ${变量}
- 使用${}输出变量,其中_ 为对数据源的引用(${_})。支持使用自定义函数。
1 ${name} 2 ${name|function} 3 ${name|function, arg1, arg2}
1 var = links: [{href: 'http://juicer.name', alt: 'Juicer’}, 2 {href: 'http://benben.cc', alt: 'Benben’}, 3 {href: 'http://ued.taobao.com', alt: 'Taobao UED’} 4 ]}; 5 var tpl = [ '{@each links as item}’, 6 '${item|links_build} <br />’, 7 '{@/each}'].join('’); 8 var links = function(data) { 9 return '<a href="' + data.href + '" alt="' + data.alt + '" />’; 10 }; 11 juicer.register('links_build', links); //注册自定义函数 12 juicer(tpl, json);
* 转义/避免转义
- ${变量} 在输出之前会对其内容进行转义,如果你不想输出结果被转义,可以使用 $${变量} 来避免这种情况。
1 var json = { 2 value: '<strong>juicer</strong>' 3 }; 4 5 var escape_tpl='${value}'; 6 var unescape_tpl='$${value}'; 7 8 juicer(escape_tpl, json); //输出 '<strong>juicer</strong>' 9 juicer(unescape_tpl, json); //输出 '<strong>juicer</strong>'
*循环遍历 {@each} ... {@/each}
- 遍历数组,${index}当前索引
1 {@each list as item, index} 2 ${item.prop} 3 ${index} //当前索引 4 {@/each}
*判断 {@if} ... {@else if} ... {@else} ... {@/if}
1 {@each list as item,index} 2 {@if index===3} 3 the index is 3, the value is ${item.prop} 4 {@else if index === 4} 5 the index is 4, the value is ${item.prop} 6 {@else} 7 the index is not 3, the value is ${item.prop} 8 {@/if} 9 {@/each}
*注释 {# 注释内容}
1 {# 这里是注释内容}
*辅助循环 {@each i in range(m, n)}
1 {@each i in range(5, 10)} 2 ${i}; //输出 5;6;7;8;9; 3 {@/each}
*子模板嵌套 {@include tpl, data}
- 子模板嵌套除了可以引入在数据中指定的子模板外,也可以通过指定字符串`#id`使用写在`script`标签中的模板代码.
- HTML代码:
<script type="text/juicer" id="subTpl"> I'm sub content, ${name} </script>
- Javascript 代码:
1 var tpl = 'Hi, {@include "#subTpl", subData}, End.'; 2 3 juicer(tpl, { 4 subData: { 5 name: 'juicer' 6 } 7 }); 8 9 //输出 Hi, I'm sub content, juicer, End. 10 //或者通过数据引入子模板,下述代码也将会有相同的渲染结果: 11 12 var tpl = 'Hi, {@include subTpl, subData}, End.'; 13 14 juicer(tpl, { 15 subTpl: "I'm sub content, ${name}", 16 subData: { 17 name: 'juicer' 18 } 19 });
HTML 代码:
1 <script id="tpl" type="text/template"> 2 <ul> 3 {@each list as it,index} 4 <li>${it.name} (index: ${index})</li> 5 {@/each} 6 {@each blah as it} 7 <li> 8 num: ${it.num} <br /> 9 {@if it.num==3} 10 {@each it.inner as it2} 11 ${it2.time} <br /> 12 {@/each} 13 {@/if} 14 </li> 15 {@/each} 16 </ul> 17 </script>
Javascript 代码:
1 var data = { 2 list: [ 3 {name:' guokai', show: true}, 4 {name:' benben', show: false}, 5 {name:' dierbaby', show: true} 6 ], 7 blah: [ 8 {num: 1}, 9 {num: 2}, 10 {num: 3, inner:[ 11 {'time': '15:00'}, 12 {'time': '16:00'}, 13 {'time': '17:00'}, 14 {'time': '18:00'} 15 ]}, 16 {num: 4} 17 ] 18 }; 19 20 var tpl = document.getElementById('tpl').innerHTML; 21 var html = juicer(tpl, data);