<A v-move="{ background: value }"></A>
时间: 2023-12-17 14:02:31 浏览: 24
This is a Vue.js directive for a v-move animation. The animation will change the background of the element with the directive as the value of the "value" variable changes. The animation will move the background smoothly from the old value to the new value.
相关问题
不查看剪切板,在html文件地址+/latex代码实现载入latex到<div>
明白了你的需求,以下是根据你的要求进行修改的代码:
```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>
.mathjax-formula {
font-size: 2.8em;
background-color: green;
position: absolute;
left: 0;
top: 0;
cursor: move;
padding: 5px;
border-radius: 5px;
color: white;
}
</style>
</head>
<body>
<div id="mathjax-formulas-container"></div>
<script>
var formulas = [];
var selectedFormula = null;
var offsetX = 0;
var offsetY = 0;
document.addEventListener("mousedown", function(event) {
var target = event.target;
if (target.classList.contains("mathjax-formula")) {
selectedFormula = target;
offsetX = event.clientX - selectedFormula.offsetLeft;
offsetY = event.clientY - selectedFormula.offsetTop;
}
});
document.addEventListener("mousemove", function(event) {
if (selectedFormula) {
var xDiff = event.clientX - selectedFormula.offsetLeft - offsetX;
var yDiff = event.clientY - selectedFormula.offsetTop - offsetY;
if (xDiff >= 0 && xDiff <= selectedFormula.offsetWidth && yDiff >= 0 && yDiff <= selectedFormula.offsetHeight) {
selectedFormula.style.left = event.clientX - offsetX + "px";
selectedFormula.style.top = event.clientY - offsetY + "px";
}
}
});
document.addEventListener("mouseup", function(event) {
selectedFormula = null;
});
document.addEventListener("keydown", function(event) {
if (event.key === "Enter") {
var input = document.getElementById("latex-input");
var latexCode = input.value.trim();
if (latexCode) {
var newFormula = document.createElement("div");
newFormula.className = "mathjax-formula";
newFormula.style.left = event.clientX + "px";
newFormula.style.top = event.clientY + "px";
newFormula.innerText = latexCode;
var mathjaxFormulasContainer = document.getElementById("mathjax-formulas-container");
mathjaxFormulasContainer.appendChild(newFormula);
formulas.push({
latexCode: latexCode,
position: {
x: event.clientX,
y: event.clientY
}
});
MathJax.Hub.Queue(["Typeset", MathJax.Hub, newFormula]);
input.value = "";
}
}
});
</script>
<div>
<input type="text" id="latex-input" placeholder="输入 LaTeX 公式" />
</div>
</body>
</html>
```
现在,你可以在页面上输入 LaTeX 公式,按下 Enter 键后会将公式加载到 `<div>` 中。你可以通过拖动已存在的 `<div>` 进行移动。感谢你的耐心和理解!
background-position
The CSS property `background-position` sets the starting position of a background image. It determines where the top left corner of the image will be placed in relation to the element's padding box. The property takes two values, which can be either keywords or lengths that represent the horizontal and vertical positions of the background image.
The syntax for `background-position` is:
```
background-position: <horizontal-value> <vertical-value>;
```
The available horizontal values are:
- left
- center
- right
- length (e.g. 10px)
The available vertical values are:
- top
- center
- bottom
- length (e.g. 20%)
Using `background-position` with a single value will set the horizontal position to that value and the vertical position to the default value of `center`.
```
background-position: center;
```
You can also use percentages as values, which represent the position as a percentage of the element's width or height.
```
background-position: 50% 25%;
```
Negative values are also allowed, which will move the background image in the opposite direction.
```
background-position: -10px -20%;
```