<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div{
width: 150px;
height: 150px;
background-color: red;
position: absolute;
left: 0;
top: 0;
}
</style>
</head>
<body>
<!-- 要求:用JQ编写同一个元素既可以被鼠标拖拽，又可以上下左右控制元素移动 -->
<div></div>
<script src="jquery-1.10.1.min.js"></script>
<script>
$("div").mousedown(function (ev){
var disX = ev.pageX - $("div").offset().left;
var disY = ev.pageY - $("div").offset().top;
$(document).on("mousemove",function (ev){
$("div").css({
"left" : ev.pageX - disX + "px",
"top" : ev.pageY - disY + "px",
})
})
$(document).on("mouseup",function (){
$(document).off("mousemove mouseup");
})
})
$(document).keydown(function (ev){
switch(ev.which){
case 37 : $("div").css("left",$("div").offset().left - 3 + "px"); break;
case 38 : $("div").css("top",$("div").offset().top - 3 + "px"); break;
case 39 : $("div").css("left",$("div").offset().left + 3 + "px"); break;
case 40 : $("div").css("top",$("div").offset().top + 3 + "px"); break;
}
})
</script>
</body>
</html>
Processed:
0.013, SQL:
8
