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js代码实现点击按钮出现60秒倒计时_javascript技巧

WBOY
Release: 2016-05-16 15:24:29
Original
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比如,一些网站上的手机短信认证的功能,有类似实现点击按钮后,倒计时60秒才能再次点击发送的效果。

此例子用Javascript实现点击按钮后,倒计时60秒才能再次点击发送验证码的功能。

例子1:Javascript 实现 点击按钮 倒计时60秒方可再次点击发送的效果

<input type="button" id="btn" value="免费获取验证码" />
<script type="text/javascript">
var wait=60;
function time(o) {
  if (wait == 0) {
   o.removeAttribute("disabled");   
   o.value="免费获取验证码";
   wait = 60;
  } else { 

   o.setAttribute("disabled", true);
   o.value="重新发送(" + wait + ")";
   wait--;
   setTimeout(function() {
    time(o)
   },
   1000)
  }
 }
document.getElementById("btn").onclick=function(){time(this);}
</script>
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例子2:点击按钮出现60秒倒计时js代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>无标题文档</title> 
<script type="text/javascript" src="js/jquery.js"></script> 
</head> 

<body> 
<input type="button" id="btn" value="免费获取验证码" onclick="settime(this)" /> 
<script type="text/javascript"> 
var countdown=60; 
function settime(val) { 
if (countdown == 0) { 
val.removeAttribute("disabled"); 
val.value="免费获取验证码"; 
countdown = 60; 
} else { 
val.setAttribute("disabled", true); 
val.value="重新发送(" + countdown + ")"; 
countdown--; 
} 
setTimeout(function() { 
settime(val) 
},1000) 
} 
</script> 
</body> 
</html>
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例子3:点击按钮后,60秒倒计时后才能继续可以点击,按钮上还能显示倒计时

预想的效果图:

这是微信公众平台上的代码

function E() {
var e = $("#mobile"), t = (new Date).getTime(), n = Math.floor((t - b) / 1e3);
g && clearTimeout(g), n >= 60 &#63; (e.prop("readonly", !1), y = !0, $("#sendmobile").html("发送验证码").attr("disabled", !1).removeClass("btn_disabled")) : (e.prop("readonly", !0), y = !1, $("#sendmobile").attr("disabled", !0).addClass("btn_disabled").html("%s秒后可重发".sprintf(60 - n)), g = setTimeout(E, 1e3));
}
function S() {
function e() {
if (!y) return;
var e = $.trim(n.val());
l.mobile(e) &#63; t.attr("disabled", !1).removeClass("btn_disabled") : t.attr("disabled", !0).addClass("btn_disabled");
}
var t = $("#sendmobile"), n = $("#mobile");
n.keyup(e).blur(e), e(), t.click(function() {
var e;
t.attr("disabled") !== "disabled" && (e = "+86" + $.trim(n.val()), b = (new Date).getTime(), E(), o.post({
url: w &#63; "/cgi-bin/formbyskey" : "/acct/formbyticket",
data: {
form: "mobile",
action: "set",
f: "json",
mobile: e
},
mask: !1
}, function(e) {
var t = e.BaseResp.Ret;
if (t == 0) u.suc("验证码已经发送"); else {
switch (t) {
case -13:
u.err("登录超时,请重新登录");
break;
case -35:
u.err("该手机已经登记过2次,请使用别的手机号进行用户信息登记");
break;
default:
u.err("验证码发送失败");
}
b = 0;
}
}));
});
}
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这段代码小编就是不知道怎么才能调用到自己的代码上来,经过高人指点有了一些头寻。

高人的解题思路:如果严格的话,这个还要结合后台获取时间的,要不然别人刷新一下就行了。
如果不严格,用个cookie也可以。

<script src="http://lib.sinaapp.com/js/jquery/1.7.2/jquery.min.js"></script>
<script src="http://yukon12345.com/yukon12345.com/js/jquery.cookie.js"></script>
<script>
 time1=$.cookie("time1")||60;
 time2=$.cookie("time2")||60;
 dis1=$.cookie("dis1")
 dis2=$.cookie("dis2")
 function countDown($obj){

  var time;
  if($obj.attr("id")=="b1")
  {
   time=--time1;
   $.cookie("time1",time,{"expires":1});
   if(time<=0){
    time1=60;
    $obj[0].disabled=!$obj[0].disabled
    clearInterval(inter1)
    $obj.text("点击发送")
    $.cookie("dis1","")
    return
   }
  }
  if($obj.attr("id")=="b2")
  { time=--time2;
   $.cookie("time2",time,{"expires":1});
   if(time<=0){
    time1=60;
    $obj[0].disabled=!$obj[0].disabled
    clearInterval(inter2)
    $obj.text("点击发送")
    $.cookie("dis2","")
    return
   }
  }

  $obj.text(time+"秒后重新发送")

 }

 $(function(){
  if(dis1="dis"){
   $("#b1")[0].disabled='disabled'
   inter1=setInterval(function(){countDown($("#b1"))},1000)
  }
  if(dis2="dis"){
   $("#b2")[0].disabled='disabled'
   inter2=setInterval(function(){countDown($("#b2"))},1000)
  }
$(".cd").bind("click",function(){
 $this=$(this);
 //没有被禁用时禁用并执行倒计时
 if(!$this[0].disabled){
 $this[0].disabled='disabled';
  if($this.attr("id")=="b1"){
   $.cookie("dis1","dis",{"expires":1})
   inter1=setInterval(function(){countDown($this)},1000)
  }
  if($this.attr("id")=="b2"){
   $.cookie("dis2","dis",{"expires":1})
   inter2=setInterval(function(){countDown($this)},1000)
  }

 }
})



})
</script>

<button id="b1" class="cd" >点击发送</button><br>
<button id="b2" class="cd" >点击发送</button><br>
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大家通过这三个例子讲解有没有点思路了,那就动手实现一下吧,希望对大家学习javascript程序设计有所帮助。

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