上述功能用html实现
时间: 2023-07-17 21:07:43 浏览: 44
当然可以!以下是一个使用 HTML 和 JavaScript 实现上述功能的简单示例:
```html
<!DOCTYPE html>
<html>
<head>
<title>画布管理</title>
<style>
.canvas {
width: 200px;
height: 200px;
background-color: #eee;
margin-bottom: 10px;
}
</style>
</head>
<body>
<div id="canvasContainer"></div>
<div>
<button onclick="addCanvas()">添加画布</button>
<button onclick="removeCanvas()">删除画布</button>
<button onclick="increaseCanvas()">画布加</button>
<button onclick="decreaseCanvas()">画布减</button>
<span id="currentPage"></span>/<span id="totalPages"></span>
</div>
<script>
var canvasContainer = document.getElementById('canvasContainer');
var currentPageElement = document.getElementById('currentPage');
var totalPagesElement = document.getElementById('totalPages');
var canvasCount = 0;
var pageSize = 4; // 每页显示的画布数量
var currentPage = 1;
function createCanvas() {
var canvas = document.createElement('div');
canvas.className = 'canvas';
canvas.innerText = '画布 ' + (canvasCount + 1);
return canvas;
}
function addCanvas() {
canvasCount++;
var canvas = createCanvas();
canvasContainer.appendChild(canvas);
updatePagination();
}
function removeCanvas() {
if (canvasCount === 0) return;
var canvas = canvasContainer.lastChild;
canvasContainer.removeChild(canvas);
canvasCount--;
updatePagination();
}
function increaseCanvas() {
pageSize++;
updatePagination();
}
function decreaseCanvas() {
if (pageSize === 1) return;
pageSize--;
updatePagination();
}
function updatePagination() {
var totalPages = Math.ceil(canvasCount / pageSize);
currentPage = Math.min(currentPage, totalPages);
currentPageElement.textContent = currentPage;
totalPagesElement.textContent = totalPages;
// 根据当前页码显示对应的画布
var start = (currentPage - 1) * pageSize;
var end = start + pageSize;
var canvases = canvasContainer.getElementsByClassName('canvas');
for (var i = 0; i < canvases.length; i++) {
if (i >= start && i < end) {
canvases[i].style.display = 'block';
} else {
canvases[i].style.display = 'none';
}
}
}
updatePagination();
</script>
</body>
</html>
```
您可以将以上代码保存为一个 HTML 文件,然后在浏览器中打开该文件,即可看到一个简单的画布管理页面。您可以点击相应的按钮来添加/删除画布,以及进行画布数量的调整,并且页码和总页数会根据画布数量和每页显示的画布数量进行动态更新。
希望这个示例对您有所帮助!如果您有任何疑问,请随时提问。
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