页面导出为PDF格式

canvaspdf.js文件

// 导出页面为PDF格式
import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
export default{
  install(Vue, options) {
    Vue.prototype.getPdf = function() {
      html2Canvas(document.querySelector('#toPdf'), {
        userCORS: 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/jpeg', 1.0)
        let PDF = new JsPDF('', 'pt', 'a4')
        if (leftHeight < pageHeight) {
          PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
        } else {
          while (leftHeight > 0) {
            PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
            leftHeight -= pageHeight
            position -= 841.89
            if (leftHeight > 0) {
              PDF.addPage()
            }
          }
        }
        PDF.save('content.pdf')
      })
    }
  }
}

　　2：使用在main。js文件中引入canvaspdf.js并且use

import canvaspdf from './helper/canvaspdf'

Vue.use(canvaspdf)

　　3：vue页面中使用

　　<ui-button type="primary" size="mini" @click="getPdf()">导出为PDF</ui-button>