質問編集履歴
3
文法修正
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HTMLのナンバーインプットで計りたい時間を入力してスタートボタンを押すとその時間でカウントダウンが開始するようにしたいです。
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どのように書き直せば入力した値を取得できるか
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どのように書き直せば入力した値を取得できるでしょうか。
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start.onclick = function(){
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time = document.getElementById("time");
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ソースコード記入
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```html
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<!DOCTYPE html>
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<html lang="ja">
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<head>
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<meta charset="utf-8">
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<title></title>
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<link rel="stylesheet" href="css/style.css">
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<script src="js/main.js"></script>
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</head>
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<body>
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<div id="timer">
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<h1>Timer</h1>
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<p>
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<span id="min">0</span> 分
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<span id="sec">0</span> 秒
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</p>
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<p>
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<input type="button" id="start" value="START">
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<input type="button" id="stop" value="STOP" disabled>
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@@ -32,14 +66,44 @@
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</p>
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</div>
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</body>
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</html>
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```
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```javaScript
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window.onload = function(){
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var counter;
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var start = document.getElementById("start");
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var stop = document.getElementById("stop");
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var reset = document.getElementById("reset");
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var min = document.getElementById("min");
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var sec = document.getElementById("sec");
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var time = document.getElementById("time");
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start.onclick = function(){
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time = document.getElementById("time");
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}
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stop.onclick = function(){
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clearInterval(counter);
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toggle();
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}
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reset.onclick = function(){
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time = 0;
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sec.innerHTML = time % 60;
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min.innerHTML = Math.floor(time / 60);
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}
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function toggle(){
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if( start.disabled){
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start.disabled = false;
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stop.disabled = true;
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} else {
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start.disabled = true;
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stop.disabled = false;
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}
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}
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function count() {
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if( time === 0) {
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sec.innerHTML = 0;
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min.innerHTML = 0;
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toggle();
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alert("3分経過しました。");
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clearInterval(counter);
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} else {
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time -= 1;
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sec.innerHTML = time % 60;
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min.innerHTML = Math.floor(time / 60);
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}
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}
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}
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53
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```
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55
197
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1
マークダウン記法使用に変更。
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -18,7 +18,7 @@
|
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18
18
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19
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20
20
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-
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```html
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<p>
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24
24
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@@ -32,9 +32,9 @@
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32
32
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33
33
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</p>
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34
34
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35
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```
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35
36
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36
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-
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37
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-
j
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37
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+
```javaScript
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38
38
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39
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var time = document.getElementById("time");
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40
40
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@@ -48,7 +48,9 @@
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48
48
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49
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toggle();
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-
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```
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