1、HTML部分
00
:
00
:
00
开始
复位
2、css部分
#div1 {
width: 100px;
height: 200px;
padding: 50px;
background-color: orange;
border: 1px solid #000000;
margin: auto;
}
span{
font-size: 20px;
}
#div1 button{
width: 100px;
height: 30px;
font-size: 16px;
margin-top: 20px;
background-color: black;
color: white;
}
3、JavaScript部分
function $(id) {
return document.getElementById(id);
}
var i = 0;
var timer = null;
var judge = true;
window.onload = function(){
//获取按钮
function startTime(){
timer = setInterval(function(){
i++;
$("sec").innerHTML = doubleNum(i % 60);
$("min").innerHTML = doubleNum(parseInt(i / 60) % 60);
$("hour").innerHTML = doubleNum(parseInt(i / 3600));
},1000);
}
function stopTime(){
clearInterval(timer);
}
$("start").onclick = function(){
if(judge){
$("start").innerHTML = "继续";
judge = false;
startTime();
}else{
$("start").innerHTML = "开始";
judge = true;
stopTime();
}
}
$("reset").onclick = function(){
clearInterval(timer);
i = 0;
judge = true;
$("start").innerHTML = "开始";
$("sec").innerHTML = "00";
$("min").innerHTML = "00";
$("hour").innerHTML = "00";
}
}
function doubleNum(n){
if(n < 10){
return "0" + n;
}else{
return n;
}
}
标签：function,00,JavaScript,innerHTML,doubleNum,start,judge,秒表
来源： /zorzhang/p/13801293.html
