web-utils-super/downByBase64.js

前端函数库

/**
 * @desc: 通过base64下载图片
 * @param {String} dataUrl
 * @param {String} fileName
 */
function downByBase64(dataUrl, fileName) {
  const saveLink = document.createElementNS(
    "http://www.w3.org/1999/xhtml",
    "a"
  ); // 有效的内部空间URI
  saveLink.href = dataUrl;
  saveLink.download = fileName;
  const event = document.createEvent("MouseEvents");
  event.initMouseEvent(
    "click",
    true,
    false,
    window,
    0,
    0,
    0,
    0,
    0,
    false,
    false,
    false,
    false,
    0,
    null
  );
  saveLink.dispatchEvent(event);
}

module.exports = downByBase64;