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50.watch监视路由地址的改变.htm
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50.watch监视路由地址的改变.htm
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<!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="./lib/vue.js"></script>
<script src="./lib/vue-router.js"></script>
</head>
<body>
<div id="app">
<router-link to="/login">登陆</router-link>
<router-link to="/register">注册 </router-link>
<router-view>
</router-view>
</div>
<script>
var login = {
template: '<h1>登陆</h1>'
}
var register = {
template: '<h1>注册</h1>'
}
var router = new VueRouter({
routes: [
{ path: '/', redirect: '/login' },
{ path: '/login', component: login },
{ path: '/register', component: register }
],
linkActiveClass: 'myactive' //和激活相关的类
})
var vm = new Vue({
el: '#app',
data: {
},
methods: {
},
router,
watch: {
//this.$route.path
'$route.path': function(newVal, oldVal){
//console.log(newVal+'---'+oldVal)
if (newVal == '/login'){
console.log('欢迎进入登陆页面')
}else if(newVal == '/register')
{
console.log('欢迎进入注册页面')
}
}
},
})
</script>
</body>
</html>