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스톱워치 예제 본문

Frontend/JavaScript

스톱워치 예제

Study 2021. 3. 20. 15:00

if문 응용, 셋인터벌 응용!

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #wrapper{
            width: 650px;
            margin: auto;
        }
        #wrapper2{
            border: 1px solid red;
        }
        #timer{
            width: 100%;
            height: 45px;
            text-align: center;
        }
        #timer input{
            text-align: right;
        }
        #buttons{
            width: 100%;
            height: 25px;
            text-align: center;
        }
        #buttons button{
            margin-left: 10px;
        }
        #lapTime{
            text-align: center;
        }
    </style>
</head>
<script>
    var t_sec;
    var t_min;
    var t_hour;
    var sec=0;
    var min=0;
    var hour=0;
    var lapDiv;
    var table;
    var st;
    var lap=0;
    //로드
    function init(){
        t_min=document.getElementById("t_min");
        t_sec=document.getElementById("t_sec");
        t_hour=document.getElementById("t_hour");
        t_min.value=getZeroString(min);
        t_sec.value=getZeroString(sec);
        t_hour.value=getZeroString(hour);
    }
    //카운터
    function countUp(){
        sec++
        if(sec>=60){
            sec-=60
            min++
        }else if(min>=60){
            min-=60
            hour++
        }
        t_sec.value=getZeroString(sec);
        t_min.value=getZeroString(min);
        t_hour.value=getZeroString(hour);
    }
    //숫자 2자리 반환
    function getZeroString(n){
        var  result
        if(n<10){
            result="0"+n;
        }else{
            result=n;
        }return result;
    }
    //시작
    function startUp(){
        st=setInterval("countUp()", 100)
        //랩타임 버튼 활성화
        document.getElementById("lapTimer").disabled=false;
    }
    //랩타임
    function lapTime(){
        lap++
        if(lap<=5){
            var tr=document.createElement("tr");
            table.appendChild(tr);
 
            var td1=document.createElement("td");
            td1.style.border=1+"px solid red";
            td1.innerText=lap+"번째 lap";
            td1.width=100+"px";
            tr.appendChild(td1);
 
            var td2=document.createElement("td");
            td2.style.border=1+"px solid red";
            td2.innerText=hour+"시간 "+min+"분 "+sec+"초";
            tr.appendChild(td2);
 
        }else if(lap==6){
            var tr=document.createElement("tr");
            table.appendChild(tr);
 
            var td1=document.createElement("td");
            td1.style.border=1+"px solid red";
            td1.innerText="유료기능확장";
            tr.appendChild(td1);
 
            var td2=document.createElement("td");
            td2.style.border=1+"px solid red";
            td2.innerText="5000원";
            tr.appendChild(td2);
 
            var tr2=document.createElement("tr");
            table.appendChild(tr2);
            var td3=document.createElement("td");
            td3.colSpan=2;
            td3.style.border=1+"px solid red";
            td3.innerText="민썜은행 110-401-410860 예금주:멋쟁이민썜";
            tr2.appendChild(td3);
        }
    }
    //중지
    function stop(){
        //정지 시 랩타임 비 활성화
        document.getElementById("lapTimer").disabled=true;
        clearInterval(st);
        document.getElementById("startButton").disabled=false;
    }
    //초기화
    function resetAll(){
        //초기화 시 랩타임 비활성화
        document.getElementById("lapTimer").disabled=true;
        clearInterval(st);
        document.getElementById("startButton").disabled=false;
        lap=0;
        sec=0;
        min=0;
        hour=0;
        t_sec.value=getZeroString(sec);
        t_min.value=getZeroString(min);
        t_hour.value=getZeroString(hour);
        //초기화 시 테이블 제거 및 재생성
        lapDiv.removeChild(table);
        makeLap();
    }
 
    //랩타임 테이블 만들기
    function makeLap(){
        lapDiv=document.getElementById("lapTime");
        table = document.createElement("table");
        table.style.width=400+"px";
        table.style.margin="auto";
        table.style.textAlign="center";
        lapDiv.appendChild(table);
    }
    window.addEventListener("load",function(){
        init();
        makeLap();
        document.getElementById("lapTimer").disabled=true;
    });
    
</script>
<body>
    <div id="wrapper">
        <div id="wrapper2">
            <div id="timer">
                <input type="text" id="t_hour">시간
                <input type="text" id="t_min">분
                <input type="text" id="t_sec">초
            </div>
            <div id="buttons">
                <button id="startButton" onclick="startUp();this.disabled=true;">시작</button>
                <button id="lapTimer" onclick="lapTime()">랩타임</button>
                <button onclick="stop()">일시정지</button>
                <button onclick="resetAll()">초기화</button>
            </div>
        </div>
        <div id="lapTime"></div>
    </div>
</body>
</html>
 cs

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