What are the operations of vue interpolation?
Vue interpolation operations include: 1. Use Mustache syntax, syntax "{{value}}"; 2. Use v-once instruction; 3. Use v-html instruction to output html code; 4. Use The v-text command is used to display data in the interface; 5. Use the v-pre command; 6. Use the v-cloak command.
The operating environment of this tutorial: windows7 system, vue2.9.6 version, DELL G3 computer.
6 types of interpolation operations in Vue
The first one: Mustache
- Mustache syntax (that is, double braces).
Mustache: beard/beard. (Mustache syntax)
Data is responsive
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<div id="app">
<h2 id="message-world">{{message}},world!</h2>
<h2 id="counter-nbsp-nbsp">{{counter * 2}}</h2>
<h2 id="message-nbsp-counter">{{message}} {{counter}}</h2>
</div>
<script>
let app = new Vue({
el: '#app',
data: {
message: 'Hello',
counter:200
},
methods: {
}
})
</script>
</body>
</html>Two types: v-once
- This instruction does not need to be followed by any expression (for example, the previous v-for was followed by an expression)
This directive means that elements and components are only rendered once and will not change as the data changes.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<div id="app">
<h2 id="message">{{message}}</h2>
<h2 id="message">{{message}}</h2>
</div>
<script>
let app = new Vue({
el: '#app',
data: {
message: 'Hello'
}
})
</script>
</body>
</html>Third type: v-html
The data requested from the server itself is an HTML code
This instruction is often followed by a string type, which will parse the string's HTML and render it
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<div id="app">
<h2 id="link">{{link}}</h2>
<h2 id="link">{{link}}</h2>
<h2 v-html="link"></h2>
</div>
<script>
let app = new Vue({
el: '#app',
data: {
link: '<a href="http://www.baidu.com">百度一下</a>'
}
})
</script>
</body>
</html>The fourth type: v-text
- The function of v-text is similar to Mustache: both are used For displaying data in the interface
v-text Normally, accepts a string type
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<div id="app">
<h2 id="message">{{message}}</h2>
<h2 v-text="message2"></h2>
<h2 id="message">{{message}}</h2>
</div>
<script>
let app = new Vue({
el: '#app',
data: {
message: 'Hello',
message2:'World'
}
})
</script>
</body>
</html>The fifth type: v-pre
v-pre is used toskip this element and its sub-elements The compilation process is used to display the original Mustache syntax.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<div id="app">
<h2 id="message">{{message}}</h2>
<h2 id="message">{{message}}</h2>
</div>
<script>
let app=new Vue({
el:'#app',
data:{
message:'Hello'
}
})
</script>
</body>
</html>Sixth type: v-cloak
- may be directly Apparently uncompiled Mustache tag
- cloak: cloak
##
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
<style>
[v-cloak]{
display: none;
}
</style>
</head>
<body>
<div id="app">
<h2 id="Hello-name">Hello,{{name}}</h2>
<h2 id="Hello-name">Hello,{{name}}</h2>
</div>
<script>
setTimeout(()=>{
let app=new Vue({
el:'#app',
data:{
name:'World'
}
})
},10000)
</script>
</body>
</html>vuejs tutorial, web front-end)
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