电脑端的保存图片

ownloadIamge(imgsrc, name) {
      const image = new Image()
      image.setAttribute('crossOrigin', 'anonymous')
      image.onload = function() {
        const canvas = document.createElement('canvas')
        canvas.width = image.width
        canvas.height = image.height
        const context = canvas.getContext('2d')
        context.drawImage(image, 0, 0, image.width, image.height)
        const url = canvas.toDataURL('image/png') // 得到图片的base64编码数据
        const a = document.createElement('a') // 生成一个a元素
        const event = new MouseEvent('click') // 创建一个单击事件
        a.download = name || '海报' // 设置图片名称没有设置则为默认
        a.href = url // 将生成的URL设置为a.href属性
        a.dispatchEvent(event) // 触发a的单击事件
      }
      image.src = imgsrc
    },
    saveImg() {
      this.ownloadIamge(this.imgData.measure_image, '邀请卡片')
    }

转载链接
https://blog.youkuaiyun.com/qq_41585377/article/details/105710985?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2_allfirst_rank_v2~rank_v25-7-105710985.nonecase