感觉JS里面还是有很多小技巧的,知道套路了,其实实现起来其实也还没有想象中的那么复杂.不过我觉得还是要把所学的知识融会贯通吧,不能学了JS就忘了前面的知识,结合起来才会威力无穷.
1.跑马灯:弹弹弹
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>单行文字弹动</title>
<script type="text/javascript">
window.onload = function(){
window.setInterval(scrolling,10);
}
var str = "神奇的JavaScript";
var str_length = str.length;
var flag = true;
function scrolling(){
//寻找目标
var inpObj = document.getElementById("input");
if (flag) {
str = " "+str;
inpObj.value = str;
if (str.length==137) {flag=false;}
}else{
str = str.substr(1);
inpObj.value = str;
if (str.length==str_length) {flag=true;}
}
}
</script>
</head>
<body>
<input type="text" value="神奇的JavaScript" id="input" size="80" />
</body>
</html>
2.显示/隐藏选项卡,这个真是太简单.......
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>显示隐藏功能</title>
<style type="text/css">
*{
margin:0px;
padding: 0px;
}
.box{
width:600px;
border: 1px solid #000;
margin: 100px auto;
}
.title{
width:100%;
height:30px;
border: 1px solid #000;
line-height: 30px;
}
</style>
<script type="text/javascript">
var flag = false;
function hid(){
var conObj = document.getElementById("content");
var button = document.getElementById("button");
if(flag){
conObj.style.display="block";
flag=false;
button.innerHTML = "隐藏";
}else{
conObj.style.display="none";
flag=true;
button.innerHTML = "显示";
}
}
</script>
</head>
<body>
<div class="box">
<div class="title">这里是一个标题<button onclick="hid()" id="button">隐藏</button></div>
<div id="content" style="display: block;">
<p>1.whatya you want for me.</p>
<p>2.I have loved you for a thousand years.</p>
<p>3.One step closer!</p>
<p>4.How did I fall in love with you?</p>
</div>
</div>
</body>
</html>
3.点出一个世界...
<!DOCTYPE html>
<html lang="en" onclick="clickPic(event)">
<head>
<meta charset="UTF-8">
<title>点到你开花</title>
<script type="text/javascript">
function clickPic(e){
var x = e.clientX;
var y = e.clientY;
var width = getRandom(10,100);
var random = getRandom(0,160);
var divObj = document.createElement("div");
var imgObj = document.createElement("img");
document.body.appendChild(divObj);
divObj.appendChild(imgObj);
if (random<10){imgObj.src = "images/P_00"+random+".jpg";}
else if (random<100){imgObj.src = "images/P_0"+random+".jpg";}
else if (random<160){imgObj.src = "images/P_"+random+".jpg";}
imgObj.width = width;
imgObj.style = "position:relative;left:0px;top:0px;"
divObj.style = "position:absolute;left:"+x+"px;top:"+y+"px;border:1px solid #ccc;padding:5px;border-radius:10px;box-shadow:5px 5px 10px gray;"
}
function getRandom(min,max){
return Math.floor(Math.random()*(max-min)+min);
}
</script>
</head>
<body>
</body>
</html>
时间： 2025-01-12 14:03:08