单击use按钮后,当我检查页面时,源显示style.css页面消失,并且没有应用任何样式。 我想不明白为什么会发生这种事。
我的index.html页面如下所示:
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<meta name="description" content="">
<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500&family=Roboto:wght@100;300;400;700&display=swap" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="style.css">
</head>
<body>
<input type="text" placeholder="First name" class="fname">
<input type="submit" value="Use" class="submit">
<script src="app.js"></script>
</body>
</html>
我的app.js是这样的:
const useBtn = document.querySelector('.submit');
const reloadBtn = document.querySelector('.btn__reload')
document.body.style.fontFamily = "Roboto;"
useBtn.addEventListener('click', function(){
let person = document.querySelector('.fname').value;
document.write(`<h2>It's ${person}'s turn!</h2>`)
document.write(`<h4>How long will they live?</h4>`)
let oldAge = `<p>${Math.floor((Math.random() * 10)+ 30)}</p>`
document.write(oldAge)
document.write(`<h4>What will be their yearly salary?</h4>`)
let salary = `<p>${Math.floor(Math.random() * 10000)}</p>`
document.write(salary)
document.write(`<h4>What will be their career</h4>`)
const jobs = [ 'plumber', 'doctor', 'witch', 'president', 'trump supporter']
let job = Math.floor(Math.random() * jobs.length)
document.write(jobs[job])
redoBtn();
})
function redoBtn(){
let tryAgain = document.createElement('button')
document.body.appendChild(tryAgain)
let buttonText = document.createTextNode('Try Again')
tryAgain.appendChild(buttonText)
tryAgain.addEventListener('click', function(){
window.location.href = window.location.href;
})
}
任何帮助都是如此感激!
您的document.write
将覆盖所有html,包括链接样式表。
摘自https://developer.mozilla.org/en-us/docs/web/api/document/write:
注意:当document.Write写入文档流时,在关闭(加载)的文档上调用document.Write将自动调用document.Open,这将清除文档。
如果您确实想使用document.write
,则需要将样式表链接重写到新文档中。 但是最好只是替换页面上某些容器元素的html,比如body
元素。
与其使用覆盖html的Document.write,您可以尝试以下方法:
<input type="submit" value="Use" class="submit">
<!-- add new div to show the result -->
<div id="result"></div>
<script src="app.js"></script>
在click事件中:
useBtn.addEventListener('click', function(){
let person = document.querySelector('.fname').value;
let res = document.getElementById('result');
res.innerHTML = "<h2>It's "+person+"'s turn!</h2>";
// add further information to innerHTML here
// hide input fname and submit button
redoBtn();
})