Detailed examples of how to create and use vue custom filters
This article mainly introduces the creation and use of vue custom filters in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.
Filter: There are many examples in life, water purifier and air purifier.
The role of the filter: to filter, filter and format data.
vue1.* version has built-in filters, but in vue2.* all versions no longer have built-in filters.
1. Filter creation
The essence of filter is a method with parameters and return value
new Vue({
filters:{
myCurrency:function(myInput){
return 处理后的数据
}
}
})2. Filter usage
Syntax:
For example Example:
{{price | myCurrency}}
3. Advanced usage of filters
When using filters You can also specify parameters to tell the filter to filter data according to the parameters.
①How to pass parameters to the filter?
{{price | myCurrency('￥',true)}}
②How to filter received?
new Vue({
filters:{
//myInput是通过管道传来的数据
//arg1在调用过滤器时在圆括号中第一个参数
//arg2在调用过滤器时在圆括号中第二个参数
myCurrency:function(myInput,arg1,arg2){
return 处理后的数据
}
}
})Code:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<script src="js/vue.js"></script>
<title></title>
</head>
<body>
<p id="container">
<p>{{msg}}</p>
<h1>{{price}}</h1>
<h1>{{price | myCurrency('￥')}}</h1>
</p>
<script>
// filter
new Vue({
el: '#container',
data: {
msg: 'Hello Vue',
price:356
},
//过滤器的本质 就是一个有参数有返回值的方法
filters:{
myCurrency:function(myInput,arg1){
console.log(arg1);
//根据业务需要，对传来的数据进行处理
// 并返回处理后的结果
var result = arg1+myInput;
return result;
}
}
})
</script>
</body>
</html><!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<script src="js/vue.js"></script>
<title></title>
</head>
<body>
<p id="container">
<p>{{msg}}</p>
<h1>{{name | myTextTransform(false)}}</h1>
</p>
<script>
new Vue({
el: '#container',
data: {
msg: 'Hello Vue',
name:'Michael'
},
filters:{
myTextTransform: function (myInput,isUpper) {
if(isUpper)
{
return myInput.toUpperCase();
}
else{
return myInput.toLowerCase();
}
}
}
})
</script>
</body>
</html><!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>过滤器</title>
<script src="js/vue.js"></script>
</head>
<body>
<p id="container">
<p>{{msg}}</p>
<h1>{{price}}</h1>
<h1>{{price|myCurrency}}</h1>
</p>
<script>
new Vue({
el:"#container",
data:{
msg:"Hello VueJs",
price:356
},
//过滤器的本质 就是一个有参数有返回值的方法
filters:{
myCurrency:function(myInput){
var result = "$"+myInput;
return result;
}
}
})
</script>
</body>
</html>The last example is hard-coded.
Related recommendations:
Detailed explanation of Angularjs filter to implement dynamic search and sorting functions
About Filter filter in JavaWeb Servlet Example analysis
Detailed examples of filter, listener, and interceptor mechanisms in java
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