|
@@ -0,0 +1,101 @@
|
|
|
+<!DOCTYPE html>
|
|
|
+<html lang="en">
|
|
|
+<head>
|
|
|
+ <meta charset="UTF-8">
|
|
|
+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
|
|
|
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
+ <title>Document</title>
|
|
|
+</head>
|
|
|
+<body>
|
|
|
+ <button id="btn">往下走</button>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <div>hahahahhahha</div>
|
|
|
+ <button id="btn2">往上走</button>
|
|
|
+ <script>
|
|
|
+ // document.write('bom')
|
|
|
+ // window.prompt('请输入',18)
|
|
|
+
|
|
|
+ var btn = document.getElementById('btn')
|
|
|
+ var btn2 = document.getElementById('btn2')
|
|
|
+ btn.onclick = function(){
|
|
|
+ // scrollTo(0,100)//scrollTo(x,y) 窗体高度为y个像素的位置
|
|
|
+ // scrollBy(0,-100) //相对于当前位置
|
|
|
+ var a = setInterval(function(){
|
|
|
+ var scrollTop = document.documentElement.scrollTop || document.body.scrollTop //滚动条滚动的距离
|
|
|
+ console.log(scrollTop)
|
|
|
+ if(scrollTop < 482.3999938964844){
|
|
|
+ scrollBy(0,30)
|
|
|
+ } else{
|
|
|
+ clearInterval(a)
|
|
|
+ }
|
|
|
+ },100)
|
|
|
+ }
|
|
|
+ btn2.onclick = function(){
|
|
|
+ var b = setInterval(function(){
|
|
|
+ var scrollTop = document.documentElement.scrollTop || document.body.scrollTop
|
|
|
+ console.log(scrollTop)
|
|
|
+ if(scrollTop > 0){
|
|
|
+ scrollBy(0,-30)
|
|
|
+ } else {
|
|
|
+ clearInterval(b)
|
|
|
+ console.log('我到头了')
|
|
|
+ }
|
|
|
+ },100)
|
|
|
+ }
|
|
|
+ </script>
|
|
|
+</body>
|
|
|
+</html>
|