首先写一个按钮:
<input type="button" id="btn" value="免费获取验证码" onclick="time(this)" />
然后写js代码:
var wait=60; function time(o){ if (wait==0) { o.innerHTML="重新发送验证码"; o.style.backgroundColor="#388BE8"; o.removeAttribute("disabled"); wait=60; }else{ o.setAttribute("disabled", true); o.innerHTML=wait+"秒后重新获取"; o.style.backgroundColor="#8f8b8b"; wait--; setTimeout(function(){ time(o) },1000) } }
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