JavaScript左右拖動滑動的按鈕效果

admin發表於2017-04-17
原文網址 : https://www.softwhy.com/article-7367-1.html
JavaScript

分享一段程式碼例項，它實現了滑鼠左右拖動滑動的按鈕效果。

程式碼例項如下:

[HTML] 純文字檢視 複製程式碼執行程式碼
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>螞蟻部落</title>
<style>
* {
  margin: 0;
  padding: 0;
}
.div_big {
  margin: 30px 20px;
  width: 200px;
  height: 36px;
  line-height: 36px;
  text-indent: 50px;
  border: 1px solid #ccc;
  background-color: #ECE4DD;
  position: relative;
  border-radius: 5px;
}
.div_samll {
  width: 44px;
  height: 44px;
  background-color: #88C86B;
  position: absolute;
  top: -4px;
  z-index: 20;
  border-radius: 22px;
}
</style>
</head>
<body>
<div class="div_big">
  <span>向右滑動完成驗證</span>
  <div class="div_samll"></div>
</div>
<script>
var div1 = document.getElementsByClassName('div_samll')[0];
var span1 = document.getElementsByTagName('span')[0]
 
var f = true;
var p = false;
var kep = function() {
  div1.onmousedown = function() { //滑鼠按鈕按下執行事件
    m = true;
    f = true;
    span1.innerHTML = '';
  }
 
  if (m === true) {
    p = true;
  }
  return p;
}
var oup = function() {
  document.onmouseup = function() { //滑鼠按鈕鬆開執行事件
    f = false;
    console.log(f);
  }
  return f;
}
document.onmousemove = function(event) {
  event = event || window.event;
  //獲得相對於body定位的橫標值；
 
  x = event.clientX
    //獲得相對於body定位的縱標值；
  y = event.clientY
  nk = x - 30;
  if (kep() && oup()) {
    if (nk > 0 && nk <= 158) {
      div1.style.marginLeft = nk + 'px';
    }
  }
}
</script>
</body>
</html>

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