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<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.length return 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) } else{ alert("O! My GOD!") } } } </script> </head> <body onLoad="checkCookie()"> </body> </html>
提示：你可以先修改部分代码再运行。
Posted in JS基础练习题.
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By yflintao – 2010年07月23日
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