router-link-active属性会默认添加到被选中的tab标签上，我们可以通过修改这个类的样式来修改被选中的tab的样式
例：
<!DOCTYPE html>
<html lang="zh-CN">
<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="js/vue.js"></script>
<script src="js//vue-router-3.0.1.js"></script>
<style>
.v-enter,
.v-leave-to {
opacity: 0;
transform: translateX(150px)
}
.v-enter-active,
.v-leave-active {
transition: all .6s ease;
}
.router-link-active {
color: red;
}
</style>
</head>
<body>
<div id="app">
<router-link to='/login'>登陆</router-link>
<router-link to='/register'>注册</router-link>
<transition mode='out-in'>
<router-view></router-view>
</transition>
</div>
<script>
var tm1 = {
template:'<h1>hello world</h1>'
}
var tm2 = {
template:'<h1>注册</h1>'
}
var routerObj = new VueRouter({
routes: [
{path:'/', redirect:'/login'},
{path:'/login', component: tm1},
{path:'/register', component: tm2}
]
})
var vm = new Vue({
el: '#app',
data: {},
methods: {},
router: routerObj
});
</script>
</body>
</html>
还有一个方式：通过路由对象身上的
linkActiveClass来设置一个类名，替换调默认的router-link-active类，然后在新设置的类名上修改样式
例：
<!DOCTYPE html>
<html lang="zh-CN">
<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="js/vue.js"></script>
<script src="js//vue-router-3.0.1.js"></script>
<style>
.v-enter,
.v-leave-to {
opacity: 0;
transform: translateX(150px)
}
.v-enter-active,
.v-leave-active {
transition: all .6s ease;
}
.router-link-active {
color: red;
}
.myActive {
color: green;
}
</style>
</head>
<body>
<div id="app">
<router-link to='/login'>登陆</router-link>
<router-link to='/register'>注册</router-link>
<transition mode='out-in'>
<router-view></router-view>
</transition>
</div>
<script>
var tm1 = {
template:'<h1>hello world</h1>'
}
var tm2 = {
template:'<h1>注册</h1>'
}
var routerObj = new VueRouter({
routes: [
{path:'/', redirect:'/login'},
{path:'/login', component: tm1},
{path:'/register', component: tm2}
],
linkActiveClass: 'myActive'
})
var vm = new Vue({
el: '#app',
data: {},
methods: {},
router: routerObj
});
</script>
</body>
</html>
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