用户激活短信通道向用户手机发送验证码短信以验明正身
<form action="http://www.helloweba.com/" method="post" name="myform">
<input type="button" class="button" value="获取手机验证码" name="phone" onclick="showtime(30)">
</form>
script>
function showtime(t){
document.myform.phone.disabled=true;
for(i=1;i<=t;i++) {
window.setTimeout("update_p(" + i + ","+t+")", i * 1000);
}
}
function update_p(num,t) {
if(num == t) {
document.myform.phone.value =" 重新发送 ";
document.myform.phone.disabled=false;
}
else {
printnr = t-num;
document.myform.phone.value = " (" + printnr +")秒后重新发送";
}
}
</script>
