[英]I want to change div text using the text itself by javascript or jquery
[英]I want to show text in div with javascript
我正在尝试在这里制作 javascript 秒表,我想为 div.circle 添加时间,但我不知道这段代码有什么问题,请帮助我!! 谢谢
<-- this is html code --->
<!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>stopwatch</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="box">
<h1>Stopwatch</h1>
<div class="circle"></div>
<div class="buttons">
<button>Start</button>
<button>Stop</button>
<button>Reset</button>
</div>
</div>
</body>
<script>
<-- this is js code -->
let min = 0;
let sec = 0;
let mil = 0;
let time = document.getElementsByClassName("circle");
time = min + " : " + sec + " : " + mil ;
time.innerHTML = time;
console.log (time);
</script>
</html>
let time = document.getElementsByClassName("circle"); time = min + ": " + sec + ": " + mil; time.innerHTML = time;
这些行实际上将时间变量设置为一个元素,然后将其断开并将其放入字符串中。
应该是这样的:
const time = document.getElementsByClassName("circle"); time.innerHTML = min + ": " + sec + ": " + mil;
您的代码缺少一些非常基本的部分。 我已经对其进行了一些更改以在按钮单击时显示某些内容,但这需要更多的努力。 我将通过 HTML、CSS、JS 中的一些教程向您强烈推荐 go 一两天。
const button = document.getElementsByTagName("button")[0]; button.onclick=() => { let min = 0; let sec = 0; let mil = 0; let time = document.getElementsByClassName("circle")[0]; let timeString = min + ": " + sec + ": " + mil; time.innerHTML = timeString; console.log(timeString); }
<div class="box"> <h1>Stopwatch</h1> <div class="circle"></div> <div class="buttons"> <button>Start</button> <button>Stop</button> <button>Reset</button> </div> </div>
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