Vue directive自定义指令

1. Vue 自定义指令实现拖拽

<script src="vue.js"></script>
<script>
Vue.directive('drag',function(){
var oDiv=this.el;//相当于dom对象
oDiv.onmousedown=function(ev){
var disX=ev.clientX-oDiv.offsetLeft;
var disY=ev.clientY-oDiv.offsetTop;

document.onmousemove=function(ev){
var l=ev.clientX-disX;
var t=ev.clientY-disY;
oDiv.style.left=l+'px';
oDiv.style.top=t+'px';
};
document.onmouseup=function(){
document.onmousemove=null;
document.onmouseup=null;
};
};
});

window.onload=function(){
var vm=new Vue({
el:'#box',
data:{
msg:'welcome'
}
});
};

</script>
</head>
<body>
<div id="box">
<div v-drag :style="{width:'100px', height:'100px', background:'blue', position:'absolute', right:0, top:0}"></div>
<div v-drag :style="{width:'100px', height:'100px', background:'red', position:'absolute', left:0, top:0}"></div>
</div>

</body>

2. vue自定义指令传参

<script src="vue.js"></script>
<script>
Vue.directive('red',function(color){
this.el.style.background=color;
});

window.onload=function(){
var vm=new Vue({
el:'#box'
});
};

</script>
</head>
<body>
<div id="box">
<span v-red="'blue'">
asdfasd
</span>
</div>

</body>

posted @ 2018-08-17 10:49  逆水乘舟，不进则退  阅读(687)  评论(0)    收藏  举报