在会员注册时很多网站都有一份协议或条款提供给用户阅读，又为了避免部分用户不阅读而直接点击"我同意"按钮跳过，通常的方法便是在一段时间内使按钮失效，实现方法如下
%26lt;html%26gt; %26lt;head%26gt; %26lt;meta http-equiv="Content-Type" content="text/html; charset=gb2312" /%26gt; %26lt;title%26gt;同意条款%26lt;/title%26gt; %26lt;/head%26gt; %26lt;body%26gt; %26lt;form id="form1" name="form1" method="post" action=""%26gt; %26lt;input type="submit" name="Submit" value="同意" /%26gt; %26lt;/form%26gt; %26lt;script language="javascript"%26gt; document.form1.Submit.disabled = true; var speed = 1000; //速度 var wait = 10; //停留时间 function updateinfo(){ if(wait == 0){ document.form1.Submit.value = "我同意"; document.form1.Submit.disabled = false; } else{ document.form1.Submit.value = "阅读条款"+wait; wait--; window.setTimeout("updateinfo()",speed); } } updateinfo(); %26lt;/script%26gt; %26lt;/body%26gt; %26lt;/html%26gt;
