JS练习-文字搬运工
2018-02-17 本文已影响0人
孙竞博
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
html, body {
margin: 0;
padding: 0;
background: #C0C0C0;
}
#wrapper {
margin: 50px auto;
width: 800px;
background: #fff;
overflow: hidden;
padding: 20px;
border-radius: 10px;
}
textarea {
background: #EFEFD6;
border: none;
width: 320px;
height: 220px;
float: left;
padding: 10px;
font-size: 18px;
}
#right {
width: 320px;
height: 220px;
background: #63EFF7;
float: right;
padding: 10px;
}
#center {
float: left;
width: 120px;
text-align: center;
}
#center a {
display: block;
color: #fff;
background: #F76300;
text-decoration: none;
padding: 10px;
margin: 0 5px;
font-family: '微软雅黑';
}
#center p {
font-size: 20px;
font-family: '微软雅黑';
}
</style>
<script>
window.onload=function () {
var left=document.getElementById('left');
var a=document.getElementsByTagName('a')[0];
var right=document.getElementById('right');
var all=document.getElementById('all');
var current=document.getElementById('current');
a.onclick=function () {
if(left.value == ''){
alert('请在左侧输入一些文字后再点击按钮');
return;
}
var str=left.value;
var arrays=str.split("");
var num=0;
var newStr="";
all.innerHTML=arrays.length;
var timer=setInterval(function () {
var substr = left.value;
left.value = substr.substring(1);
if(current.innerHTML==arrays.length)
{
clearInterval(timer);
}
else {
newStr+=arrays[num];
num++;
}
right.innerHTML=newStr;
current.innerHTML=num;
},100)
}
}
</script>
</head>
<body>
<div id="wrapper">
<textarea id="left"></textarea>
<div id="center">
<a href="javascript:">把文字右移</a>
<p><span id="current">0</span>/<span id="all">0</span></p>
</div>
<div id="right"></div>
</div>
</body>
</html>
