You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
929 B
39 lines
929 B
<!DOCTYPE html> |
|
<html lang="en"> |
|
<head> |
|
<meta charset="UTF-8"> |
|
<title>4.姓名案例_计算属性简写</title> |
|
<script type="text/javascript" src="../vue.js"></script> |
|
</head> |
|
<body> |
|
<div id="root"> |
|
姓：<input type="text" v-model="firstName"> <br> |
|
名：<input type="text" v-model="lastName"> <br> |
|
姓名： <span>{{fullName}}</span> |
|
</div> |
|
|
|
<script type="text/javascript"> |
|
const vm = new Vue({ |
|
el: '#root', |
|
data: { |
|
firstName: "张", |
|
lastName: "三", |
|
fullName: "张-三" |
|
}, |
|
watch: { |
|
firstName(newValue){ |
|
setTimeout(()=>{ |
|
this.fullName = newValue + '-' + this.lastName |
|
}, 1000) |
|
|
|
}, |
|
lastName(newValue){ |
|
this.fullName = this.firstName + '-' + newValue |
|
} |
|
} |
|
|
|
}) |
|
console.log(vm) |
|
</script> |
|
</body> |
|
</html> |