创建一个欢迎 cookie <html><head><script type="text/javascript">function getCookie(c_name){if (document.cookie.length>0){ c_start=document.cookie.indexOf(c_name + "=")if (c_start!=-1){ c_start=c_start + c_name.length+1 c_end=document.cookie.indexOf(";",c_start)if (c_end==-1) c_end=document.cookie.lengthreturn unescape(document.cookie.substring(c_start,c_end))} }return ""}function setCookie(c_name,value,expiredays){var exdate=new Date()exdate.setDate(exdate.getDate()+expiredays)document.cookie=c_name+ "=" +escape(value)+((expiredays==null) ? "" : "; expires="+exdate.toGMTString())}function checkCookie(){username=getCookie('username')if (username!=null && username!="") {alert('Welcome again '+username+'!')}else { username=prompt('Please enter your name:',"") if (username!=null && username!="") { setCookie('username',username,365) } }}</script></head><body onLoad="checkCookie()"></body></html>
按钮动画 <html><head><script type="text/javascript">function mouseOver(){document.b1.src ="../i/eg_mouse.jpg"/*tpa=http://www.w3school.com.cn/i/eg_mouse.jpg*/}function mouseOut(){document.b1.src ="../i/eg_mouse2.jpg"/*tpa=http://www.w3school.com.cn/i/eg_mouse2.jpg*/}</script></head><body><a href="../index.html" tppabs="http://www.w3school.com.cn/index.html" target="_blank"><img border="0" alt="Visit W3School!" src="../i/eg_mouse2.jpg" tppabs="http://www.w3school.com.cn/i/eg_mouse2.jpg" name="b1" onmouseover="mouseOver()" onmouseout="mouseOut()" /></a></body></html>
添加了 JavaScript 的图像映射 <html><head><script type="text/javascript">function writeText(txt){document.getElementById("desc").innerHTML=txt}</script></head><body><img src="../i/eg_planets.jpg" tppabs="http://www.w3school.com.cn/i/eg_planets.jpg" border="0" usemap="#planetmap" alt="Planets" /><map name="planetmap" id="planetmap"><area shape="circle" coords="180,139,14"onMouseOver="writeText('直到 20 世纪 60 年代，金星一直被认为是地球的孪生姐妹，因为金星是离我们最近的行星，同时还由于两者拥有很多共同的特征。')"href ="../example/html/venus.html" tppabs="http://www.w3school.com.cn/example/html/venus.html" target ="_blank" alt="Venus" /><area shape="circle" coords="129,161,10"onMouseOver="writeText('从地球上是很难研究水星的，这是由于它和太阳的距离总是很近。')"href ="../example/html/mercur.html" tppabs="http://www.w3school.com.cn/example/html/mercur.html" target ="_blank" alt="Mercury" /><area shape="rect" coords="0,0,110,260"onMouseOver="writeText('太阳和类似木星这样的气态行星是到目前为止太阳系中最大的物体。')"href ="../example/html/sun.html" tppabs="http://www.w3school.com.cn/example/html/sun.html" target ="_blank" alt="Sun" /></map><p id="desc"></p></body></html>
