Vue之自定義指令
阿新 • • 發佈：2019-02-03
使用Vue.directive();
1.直接自定義名稱 :red
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <style> </style> <script src="vue.js"></script> <script> Vue.directive('red',function(){ this.el.style.background='red'; }); window.onload=function(){ var vm=new Vue({ el:'#box', data:{ msg:'welcome' } }); }; </script> </head> <body> <div id="box"> <span v-red> asdfasd </span> </div> </body> </html>
效果：
2.使用v-名稱,在data中設定屬性
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <style> </style> <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', data:{ a:'blue' } }); }; </script> </head> <body> <div id="box"> <span v-red="a"> asdfasd </span> </div> </body> </html>
3.使用v-名稱，直接設定屬性名稱
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <style> </style> <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> </html>
效果：
5.Vue自定義拖拽指令
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<style>
</style>
<script src="vue.js"></script>
<script>
Vue.directive('drag',function(){
var oDiv=this.el;
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>
</html>