过滤器:
vue提供过滤器:
capitalize uppercase currency....
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< div id = "box" >
{{msg|currency ¥}}
</ div >
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debounce 配合事件,延迟执行
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< div id = "box" >
< input type = "text" @ keyup = "show | debounce 2000" >
</ div >
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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:{
}
}).$mount( '#box' );
</script>
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vue插件filterBy 过滤数据
filterBy '谁'
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<div id= "box" >
<input type= "text" v-model= "a" >
<ul>
<li v- for = "val in arr | filterBy a" >
{{val}}
</li>
</ul>
</div>
<script>
var vm= new Vue({
data:{
arr:[ 'width' , 'height' , 'background' , 'orange' ],
a: ''
},
methods:{
}
}).$mount( '#box' );
</script>
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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:{
}
}).$mount( '#box' );
</script>
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自定义过滤器: model ->过滤 -> view
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Vue.filter(name, function (input){
}); |
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<div id= "box" >
{{a | toDou 1 2}}
</div>
<script>
Vue.filter( 'toDou' , function (input,a,b){
alert(a+ ',' +b);
return input<10? '0' +input: '' +input;
});
var vm= new Vue({
data:{
a:9
},
methods:{
}
}).$mount( '#box' );
</script>
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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:{
}
}).$mount( '#box' );
</script>
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50、选择器过滤html标记
双向过滤器:*
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Vue.filter( 'filterHtml' ,{
read: function (input){ //model-view
return input.replace(/<[^<+]>/g, '' );
}, write: function (val){ //view -> model
return val;
} }); |
数据 -> 视图
model -> view
view -> model
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<!DOCTYPE html> <html lang= "en" >
<head> <meta charset= "UTF-8" >
<title></title>
<style>
</style>
<script src= "vue.js" ></script>
<script>
//<h2>welcome</h2>
Vue.filter( 'filterHtml' ,{
read: function (input){ //model-view
alert(1);
return input.replace(/<[^<]+>/g, '' );
},
write: function (val){ //view -> model
console.log(val);
return val;
}
});
window.onload= function (){
var vm= new Vue({
data:{
msg: '<strong>welcome</strong>'
}
}).$mount( '#box' );
};
</script>
</head> <body> <div id= "box" >
<input type= "text" v-model= "msg | filterHtml" >
<br>
{{msg | filterHtml}}
</div>
</body> </html> |