NO.10 限时点击计数实例
要求
- 点击按钮中间数值增加
- 点击按钮开始倒计时
- 到达规定时间禁止点击按钮
样本
代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="index.css">
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
<title>倒计时</title>
</head>
<body>
<div class="container">
<div class="box">
<p class="second" id="second">60</p>
<p class="number" id="number">1</p>
</div>
<div class="btnbox">
<button class="numberBtn" id="btn">Click me</button>
</div>
</div>
</body>
<script src="index.js"></script>
</html>
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Javascript
var btn = document.getElementById('btn');
var second = document.getElementById('second');
var number = document.getElementById('number');
var lock = false;
var btnClick = btn.addEventListener('click',function reckon(){
var count = 60;
var num = parseInt(document.getElementById('number').innerText);
if(!lock){
lock = true;
var time = setInterval(function(){
if(count>0){
count --;
}else{
count = 60;
lock = false;
}
if (count == 0 ){
clearInterval(time);
}
second.innerText = count;
},1000);
}
document.getElementById('number').innerHTML = num +=1;
})
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jQuery
$(document).ready(function(){
var bigNumber = $('#number');
var secondNumber = $('#second');
var lock = false;
$('#btn').click(function btnClick(){
let const1 = parseInt($('#number').text());
$('#number').text(const1+=1)
if(!lock){
lock = true;
let numTime = parseInt($('#second').text());
let time = setInterval(function(e){
if(numTime > 0){
numTime --;
}else{
numTime = 60;
}
if(numTime == 0){
$('#btn').attr('disabled',"false");
clearInterval(time)
}
$('#second').text(numTime)
},1000)
}
})
})
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