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Js滑块拖拽
2018.09.08 阅读量次index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>滑块拖拽</title>
</head>
<style>
body {
margin: 0;
padding: 0;
user-select: none;
}
.content {
position: relative;
width: 300px;
height: 40px;
margin: 50px auto;
background-color: #E8E8EB;
text-align: center;
line-height: 40px;
}
.rect {
position: absolute;
width: 100%;
height: 100%;
}
.rect .bg {
position: absolute;
left: 0;
top: 0;
z-index: 1;
width: 0;
height: 100%;
background: rgba(122,194,60,.4);
}
.rect .move {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
width: 45px;
height: 40px;
position: absolute;
top: 0;
left: 0;
background-color: #fff;
border: 1px solid #cccccc;
}
.rect span{
}
</style>
<body>
<div class="content">
<div class="rect">
<div class="bg"></div>
<span>滑块拖动验证</span>
<div class="move">
<img src="images/right.png" alt="图片拖动">
</div>
</div>
</div>
<script>
var oMove = document.querySelector(".move"),
oBg = document.querySelector(".bg"),
oRect = document.querySelector(".rect"),
oImage = document.querySelector("img"),
oSpan = document.querySelector("span"),
_X = 0;
oMove.onmousedown = function (e) {
var startX = e.clientX;
document.onmousemove = function (e) {
var endX = e.clientX;
_X = endX - startX;
if (_X < 0) {
_X = 0;
}
if (_X > 255) {
_X = 255;
}
oBg.style.width = oMove.style.left = _X + "px";
if (_X >= 255) {
oRect.style.color = "black";
oImage.src = "images/left.png";
oSpan.innerHTML = "验证成功";
oBg.style.width = oMove.style.left = 255 + "px";
}
}
};
document.onmouseup = function () {
document.onmousemove = null;
if (_X < 255) {
oBg.style.width = oMove.style.left = 0;
}
}
</script>
</body>
</html>
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