https://github.com/fengyuanchen/cropperjs
演示
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| <!DOCTYPE html>
<html lang="zh">
<head>
<title>前端图片裁剪 cropperjs</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://unpkg.com/cropperjs@1.5.12/dist/cropper.css">
</head>
<body>
<input type="file" id="input" accept="image/*">
<img id="after-image" src="" style="display: block;">
<button onclick="ok()" style="display: block;">裁剪</button>
<hr />
处理后：
<img id="before-image" src="" style="display: block;">
<script src="https://unpkg.com/cropperjs@1.5.12"></script>
<script type="text/javascript">
const Aimage = document.getElementById('after-image');
let cropper;
document.getElementById('input').addEventListener('change', (e) => {
const file = e.target.files[0];
const reader = new FileReader();
console.log(reader);
reader.readAsDataURL(file);
reader.onload = (e) => {
console.log("读取成功", e.target.result);
Aimage.src = e.target.result;
cropper = new Cropper(Aimage, {
viewMode: 1
});
};
})
function ok() {
const Bimage = document.getElementById('before-image');
Bimage.src = cropper.getCroppedCanvas({
imageSmoothingQuality: 'high'
}).toDataURL('image/png')
console.log("处理后：",Bimage.src);
}
</script>
</body>
</html>
|