1、使用index
<!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>vue導航</title> <style media="screen"> *{ margin:0; padding: 0; } ul li{ list-style: none; } .navul{ margin:100px auto 20px; overflow: hidden; } .navul li{ background-color: #5597b4; padding:18px 30px; float:left; color: #fff; font-size: 18px; cursor: pointer; } .active{ background-color: #5597b4; } .home .home,.new .new,.contact .contact,.service .service{ background-color: skyblue; } .checked{ background: #eff4f7; } </style></head><body> <div id="nav"> <ul> <li v-for="(relation,index) in relations" v-bind:id="relation.id" v-bind:id="relation.id" v-bind:class="{checked:index==nowIndex}" v-on:click="relationClick(index)"> <i></i> <span class="">{{relation.text}}</span> </li> </ul> </div> <script src="js/vue.js" charset="utf-8"></script> <script type="text/javascript"> var nav = new Vue({ el:'#nav', data:{ relations: [ {text:'項目',id:'program'}, {text:'人員',id:'person'}, {text:'機構',id:'organization'}, {text:'技術',id:'tech'}, {text:'地區',id:'location'}, {text:'國家',id:'country'} ], nowIndex:0 // willShow:false }, methods:{ relationClick:function(index){ this.nowIndex=index; } } }); </script></body></html>2、通過改變當前值切換類名
<!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>點擊切換</title> <style> .glyphicon-minus{ color:#08f; } .glyphicon-plus{ color:purple; } </style> <script src="js/vue.js"></script></head><body> <div id="box"> <div style="width:100px; height:100px; background: #6bacdf;" v-show="isDisplay"></div> <div class="form-group"> <button class="btn" :class="[isShow?'btn-primary':'']" @mouseover="toggleShow()" @mouseout="toggleShow()" v-text="btnStyle"></button> </div> <div class=""> <button class="btn" :class="[isTrue?'glyphicon-minus':'glyphicon-plus']" @click="toggleBar()">切換類名按鈕</button> </div> </div> <script type="text/javascript"> new Vue({ el:'#box', data:{ isDisplay:false, isShow: false, isTrue:true, btnStyle: 'Default' }, methods:{ toggleShow: function() { this.isShow = !this.isShow; }, toggleBar:function(){ this.isTrue = !this.isTrue; } }, watch: { isShow: function(newVal) { // console.log(newVal); newVal ? this.btnStyle = 'Primary' : this.btnStyle = 'Default' } }, }); </script></body></html>
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