So I have a problem with innerHTML. I have an empty array buttons and I fill it using a for loop. Then I use another for loop to set each button's innerHTML to "Info", but when I check my site, the buttons are still empty.
//数组
let buttons = [];
//循环问题
for(let i = 0; i < 2; i++)
{
//填充按钮数组的循环
for(let l = 0; l < 4; l++)
{
buttons[l] = $(`#btn${l}`);
}
//循环设置按钮的innerHTML
for(let s = 0; s < buttons.length; s++)
{
buttons[s].innerHTML = "Info";
}
}
<!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>Quiz Game</title>
</head>
<body>
<!-- 主容器 -->
<div class="main-container">
<!-- 头部 -->
<h1 class="header" id="header">Quiz Game</h1>
<!-- 按钮 -->
<button id="btn0"></button>
<button id="btn1"></button>
<button id="btn2"></button>
<button id="btn3"></button>
</div>
<script src="/library/jquery-3.6.3.min.js"></script>
<script src="test1.js"></script>
</body>
</html>
P粉6676492532023-09-11 00:06:53
Using jQuery, you should call buttons[s].html("Info"); to set innerHTML. However, using buttons[s].text("Info"); is better here because there aren't actually any HTML tags in the string.
You can also use a selector to select all buttons starting with "btn" and set their text all at once.
const buttons = $('[id^=btn]');
buttons.text('Info');
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <button id="btn0"></button> <button id="btn1"></button> <button id="btn2"></button> <button id="btn3"></button>