vue.js implements binding class
This article mainly shares with you how to implement binding class in vue.js, mainly in the form of code. I hope it can help you.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!-- Vue.js -->
<script src="https://unpkg.com/vue/dist/vue.min.js"></script>
</head>
<body>
<p id="app1">
<!--# 给v-bind设置一个对象，可以动态地切换class #-->
<p :class="{'active':isActive}"></p>
</p>
<p id="app2">
<!--# 给v-bind设置一个对象，可以动态地切换class #-->
<!--# 对象中也可以传入多个属性，来动态切换class。另外，:class可以与普通class共存 #-->
<p class="static" :class="{'active':isActive,'error':isError}"></p>
</p>
<p id="app3">
<!--# 给v-bind设置一个对象，可以动态地切换class #-->
<!--# 当:class的表达式过长或逻辑复杂时，还可以绑定一个计算属性，这是一种很友好和常见的用法，一般当条件多于两个时，都可以使用data或computer #-->
<p :class="classes"></p>
</p>
</body>
</html>
<script>
//例子一
var app1 = new Vue({
el:'#app1',
data:{
//类名isActive，当其为true时，p会拥有类名active，为false时则没有
isActive:true
}
});
//例子二
var app2 = new Vue({
el:'#app2',
data:{
//类名isActive，当其为true时，p会拥有类名active，为false时则没有
isActive:true,
//类名isError，当其为true时，p会拥有类名error，为false时则没有
isError:true
}
});
//例子三
var app3 = new Vue({
el:'#app3',
data:{
isActive:true,
isError:false
},
computed:{
classes:function () {
return {
active:this.isActive && !this.isError
}
//除了计算属性，你也可以直接绑定一个Object类型的数据，或者使用类似计算机属性的methods
}
}
})
</script>Related recommendations:
Detailed introduction to Vue.js dynamic binding class
Use v-bind binding in Vue.js Notes on class
Detailed explanation of Vue.js dynamic binding class
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