SOURCE

new Vue({
		el: '#app',
		data: {
    		message: 'Hello Word!'
		},
		methods:{
			change:function(){
				this.message='Hello Vue！'
			}
		}
	})	
	new Vue({
		el:'#app2',
		data:{
			color:'#fff',
			divHeight:"100",
			divWidth:'100',
			contenteditable:true
		},
		methods:{
			changeColor:function(){
				this.color="#ccc",
				this.divHeight="100",
				this.divWidth="100"
			}
		}
	})

<div id='app'>
			<p>{{message}}</p>
			<button v-on:click='change'>改变</button>
		</div>
		<div id="app2">
			<div v-bind:style=" {'background-color': color, 'height': divHeight + 'px','width':divWidth+'px','contenteditable':contenteditable}"></div>
			<button v-on:click="changeColor">变化</button>
		</div>