没有剩下的了,帮我提供的代码编辑到一起
时间: 2024-04-15 22:25:36 浏览: 90
好的,下面是你提供的代码整合在一起的结果:
```html
<!DOCTYPE html>
<html>
<head>
<title>MathJax Example</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
<script src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML"></script>
<style>
#canvas {
position: relative;
width: 100%;
height: 95vh;
background-color: #CCFFCC;
}
.mathjax-formula {
font-size: 2.8em;
position: absolute;
cursor: move;
padding: 5px;
border-radius: 5px;
color: black;
}
.mathjax-formula:focus {
outline: none;
border: 2px solid black;
}
</style>
</head>
<body>
<div id="canvas">
<div id="mathjax-formulas-container"></div>
</div>
<script>
var formulas = [];
var selectedFormula = null;
var isDragging = false;
function createFormula(latexCode, x, y) {
var mathjaxFormulasContainer = document.getElementById("mathjax-formulas-container");
var newFormula = document.createElement("div");
newFormula.className = "mathjax-formula";
newFormula.style.left = x + "px";
newFormula.style.top = y + "px";
newFormula.contentEditable = true;
newFormula.innerText = latexCode;
mathjaxFormulasContainer.appendChild(newFormula);
formulas.push({
latexCode: latexCode,
position: {
x: x,
y: y
}
});
MathJax.Hub.Queue(["Typeset", MathJax.Hub, newFormula]);
newFormula.addEventListener("dblclick", function(event) {
event.stopPropagation();
});
newFormula.addEventListener("mousedown", function(event) {
event.stopPropagation();
selectedFormula = newFormula;
isDragging = true;
newFormula.style.cursor = "move";
});
newFormula.addEventListener("mouseup", function(event) {
event.stopPropagation();
isDragging = false;
newFormula.style.cursor = "auto";
});
newFormula.addEventListener("mousemove", function(event) {
event.stopPropagation();
if (isDragging && selectedFormula === newFormula) {
var newX = event.clientX - selectedFormula.offsetWidth / 2;
var newY = event.clientY - selectedFormula.offsetHeight / 2;
selectedFormula.style.left = newX + "px";
selectedFormula.style.top = newY + "px";
}
});
newFormula.addEventListener("keydown", function(event) {
if (event.key === "Enter") {
event.preventDefault();
newFormula.blur();
MathJax.Hub.Queue(["Typeset", MathJax.Hub, newFormula]);
}
});
}
document.getElementById("canvas").addEventListener("dblclick", function(event) {
navigator.clipboard.readText().then(function(text) {
if (text) {
var latexCode = text.trim();
if (latexCode) {
createFormula(latexCode, event.clientX, event.clientY);
}
}
});
});
document.getElementById("canvas").addEventListener("click", function(event) {
if (event.target === document.getElementById("canvas")) {
if (selectedFormula) {
selectedFormula.style.border = "none";
selectedFormula = null;
isDragging = false;
}
}
});
</script>
</body>
</html>
```
这是一个完整的HTML文档,包含了用于在网页上添加和编辑数学公式的代码。代码中使用了MathJax库来渲染LaTeX代码,并使用了JavaScript来处理公式的创建和拖动。页面上有一个画布(canvas),可以在其上双击来添加新的公式,双击公式可以进行编辑,点击公式可以进行选中和拖动。公式的位置和内容会被保存在formulas数组中。
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