点击切换图片
方法1 用indexOf（）判断
rg/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script>
window.onload = function(){
var oImg = document.getElementById('img1');
var onOff = true;
oImg.onclick = function(){
var pan = oImg.src.indexOf("girl") ;
if (pan>=0) {
oImg.src = '03.JPG';
}else{
oImg.src = "girl.JPG";
}
}
};
</script>
</head>
<body>
<img id="img1" src="./girl.JPG" alt="" />
</body>
</html>
方法2
设置一个变量 var onOff = true;
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script>
window.onload = function(){
var oImg = document.getElementById('img1');
var onOff = true;
oImg.onclick = function(){
if (onOff) {
oImg.src = '01.JPG';
onOff = false;
}else{
oImg.src = '02.JPG';
onOff = true;
}
};
};
</script>
</head>
<body>
<img id="img1" src="./01.JPG" alt="" />
</body>
</html>
