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latex_render.html
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>LaTeX 渲染工具</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
<style>
body {
font-family: Arial, sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
}
.container {
text-align: center;
}
#output {
border: 1px solid #ccc;
padding: 10px;
margin-top: 10px;
}
button {
background-color: #4CAF50;
border: none;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
}
</style>
</head>
<body>
<div class="container">
<h1>LaTeX 渲染工具</h1>
<label>输入字体大小：
<input type="number" id="input-font-size" min="8" max="72" value="20">
</label>
<br>
<label>图片字体大小：
<input type="number" id="output-font-size" min="8" max="72" value="20">
</label>
<br>
<br>
<textarea id="input-latex" rows="6" cols="60" placeholder="请输入 LaTeX 代码："></textarea>
<br>
<button id="render-btn">渲染</button>
<div id="output"></div>
</div>
<script>
const inputLatex = document.getElementById("input-latex");
const output = document.getElementById("output");
const inputFontSizeInput = document.getElementById("input-font-size");
const outputFontSizeInput = document.getElementById("output-font-size");
inputFontSizeInput.addEventListener("change", function () {
inputLatex.style.fontSize = this.value + "px";
});
inputLatex.addEventListener("focus", function () {
this.placeholder = "";
});
inputLatex.addEventListener("blur", function () {
if (this.value === "") {
this.placeholder = "请输入 LaTeX 代码：";
}
});
document.getElementById("render-btn").addEventListener("click", function () {
let input = inputLatex.value;
let outputFontSize = outputFontSizeInput.value;
output.style.fontSize = outputFontSize + "px";
output.innerHTML = '\\(' + input + '\\)';
MathJax.typesetClear([output]);
MathJax.typesetPromise([output]).catch((err) => console.log(err));
});
</script>
</body>
</html>