一:行间样式 :和绑定其他dom的属性一样, v-bind:style=
<div v-bind:style={backgroundColor:color}>2</div> //color是data或者computed的k;
<div v-bind:style='style1'>1<div> //整个style1是data的k或者computed的k
<div v-bind:style='[style1,{backgroundColor:"blue","200px"},style2]'>aaa</div>; //style的值是数组,里面的值是data或computed的k
div { height: 100px; 100px; } </style> </head> <body> <div id="app"> <div v-bind:style='style1'>1<div> <div v-bind:style='[style1,{backgroundColor:"blue","200px"},style2]'>aaa</div> <div v-bind:style='demostyle'></div> <button v-on:click='changeColor'>click</button> </div> <script> var vm = new Vue({ el: '#app', data: { color: 'red', style2: { fontSize: '30px', fontWeight: 'bolder' } }, computed: {//利用computed来获得,这厉害了,不但可以获取到值(computed的k和data里的k用法一样), //而且节省了性能,一旦相关值变化,computed里的k会重新计算返回新的值 style1: function () { return { height: '100px', '100px', backgroundColor: this.color //这一句如果在data里是获取不到this.color的 } } }, methods: { changeColor: function () { this.color = this.color == 'red' ? 'yellow' : 'red'; } } }) </script>