安装 npm install --save html2canvas
引入 import html2canvas from ‘html2canvas’;
//图片格式转换方法
dataURLToBlob(dataurl) {
let arr = dataurl.split(',');
let mime = arr[0].match(/:(.*?);/)[1];
let bstr = atob(arr[1]);
let n = bstr.length;
let u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
return new Blob([u8arr], { type: mime });
},
saveImage(divText, imgText) {
let canvasID = this.$refs[divText];
let that = this;
let a = document.createElement('a');
html2canvas(canvasID,{}).then(canvas => {
let dom = document.body.appendChild(canvas);
dom.style.display = 'none';
a.style.display = 'none';
document.body.removeChild(dom);
let blob = that.dataURLToBlob(dom.toDataURL('image/png'));
a.setAttribute('href', URL.createObjectURL(blob));
//这块是保存图片操作 可以设置保存的图片的信息
a.setAttribute('download', imgText + '.png');
document.body.appendChild(a);
a.click();
URL.revokeObjectURL(blob);
document.body.removeChild(a);
});
},
html2canvas参数 https://juejin.cn/post/6844903697261002765
