安装插件
npm install html2canvas --save
npm install jspdf --save
exportPDF.js
import html2Canvas from 'html2canvas';
import JsPDF from 'jspdf';
export default {
install (Vue, options) {
Vue.prototype.exportPdfHandler = function (el,title,imgtype) {
// el 要导出元素的id
// title 文件名称
// imgtype 图片类型 默认png
let imgType = imgtype? imgtype: "png"
let element = document.getElementById(el)
html2Canvas(element, {
allowTaint: true
}).then(function (canvas) {
let contentWidth = canvas.width;
let contentHeight = canvas.height;
let pageHeight = contentWidth / 592.28 * 841.89;
let leftHeight = contentHeight;
let position = 0;
let imgWidth = 595.28;
let imgHeight = 592.28 / contentWidth * contentHeight;
let pageData = canvas.toDataURL('image/' + imgType.toLowerCase(), 1.0);
let PDF = new JsPDF('', 'pt', 'a4');
if (leftHeight < pageHeight) {
PDF.addImage(pageData, imgType.toUpperCase(), 0, 0, imgWidth, imgHeight);
} else {
while (leftHeight > 0) {
PDF.addImage(pageData, imgType.toUpperCase(), 0, position, imgWidth, imgHeight);
leftHeight -= pageHeight;
position -= 841.89;
if (leftHeight > 0) {
PDF.addPage();
}
}
}
PDF.save(title + '.pdf');
})
}
}
}
main.js
import htmlToPdf from './utils/exportPDF.js'
Vue.use(htmlToPdf)
使用
<div id="HealthComparison">
</div>
<el-button size="small" type="primary" @click="exportPdfHandler('需要导出内容的id','文件名称')">导出</el-button>