完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/vue/2.6.10/vue.js"></script>
</head>
<body>
<!-- 身份证号匹配
18位
....x
\d{17}[0-9xX]
-->
<div id="app">
<input type="text" v-model="keyword" @keyup.enter="handleEnter">
</div>
<script>
new Vue({
el:"#app",
data:{
keyword:""
},
methods: {
handleEnter(){
var reg=/^\d{17}[0-9xX]$/;
if(!reg.test(this.keyword.trim())){ //trim()去除空格
alert("身份证号码不正确")
}
}
},
})
</script>
</body>
</html>