过滤器:
vue提供过滤器:
capitalize uppercase currency....
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<div id="box"> {{msg|currency ￥}} </div> |
debounce 配合事件，延迟执行
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<div id="box"> <input type="text" @keyup="show | debounce 2000"> </div> |
数据配合使用过滤器:
limitBy 限制几个
limitBy 参数(取几个)
limitBy 取几个 从哪开始
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<div id="box"> <ul> <!--取2个--> <li v-for="val in arr | limitBy 2"> {{val}} </li> <br/> <br/> <!--取2个，从第arr.length-2个开始取--> <li v-for="val in arr | limitBy 2 arr.length-2"> {{val}} </li> </ul> </div> <script> var vm=new Vue({ data:{ arr:[1,2,3,4,5] }, methods:{ } }).$mount('#box'); </script> |
vue插件filterBy 过滤数据
filterBy '谁'
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<div id="box"> <input type="text" v-model="a"> <ul> <li v-for="val in arr | filterBy a"> {{val}} </li> </ul> </div> <script> var vm=new Vue({ data:{ arr:['width','height','background','orange'], a:'' }, methods:{ } }).$mount('#box'); </script> |
angular orderBy 排序
orderBy 谁 1/-1
1 -> 正序
2 -> 倒序
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<div id="box"> <input type="text" v-model="a"> <ul> <li v-for="val in arr | orderBy -1"> {{val}} </li> </ul> </div> <script> var vm=new Vue({ data:{ arr:['width','height','background','orange'], a:'' }, methods:{ } }).$mount('#box'); </script> |
自定义过滤器: model ->过滤 -> view
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Vue.filter(name,function(input){}); |
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<div id="box"> {{a | toDou 1 2}} </div> <script> Vue.filter('toDou',function(input,a,b){ alert(a+','+b); return input<10?'0'+input:''+input; }); var vm=new Vue({ data:{ a:9 }, methods:{ } }).$mount('#box'); </script> |
时间转化器
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<div id="box"> {{a | date}} </div> <script> Vue.filter('date',function(input){ var oDate=new Date(input); return oDate.getFullYear()+'-'+(oDate.getMonth()+1)+'-'+oDate.getDate()+' '+oDate.getHours()+':'+oDate.getMinutes()+':'+oDate.getSeconds(); }); var vm=new Vue({ data:{ a:Date.now()//返回1970 年 1 月 1日午夜与当前日期和时间之间的毫秒数。 }, methods:{ } }).$mount('#box'); </script> |
50、选择器过滤html标记
双向过滤器:*
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Vue.filter('filterHtml',{ read:function(input){ //model-view return input.replace(/<[^<+]>/g,''); }, write:function(val){ //view -> model return val; }}); |
数据 -> 视图
model -> view
view -> model
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<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <style> </style> <script src="vue.js"></script> <script> //<h2>welcome</h2> Vue.filter('filterHtml',{ read:function(input){ //model-view alert(1); return input.replace(/<[^<]+>/g,''); }, write:function(val){ //view -> model console.log(val); return val; } }); window.onload=function(){ var vm=new Vue({ data:{ msg:'<strong>welcome</strong>' } }).$mount('#box'); }; </script></head><body> <div id="box"> <input type="text" v-model="msg | filterHtml"> <br> {{msg | filterHtml}} </div></body></html> |