billie-util/util/download/download.js

a gatjer of utils to improve develop efficiency

/**
 * 传入一个文件下载路径，将文件下载到本地
 */
const isChrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
const isSafari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
const  download = function (sUrl) {
      //If in Chrome or Safari - download via virtual link click
      if (isChrome || isSafari) {
          //Creating new link node.
          var link = document.createElement('a');
          link.href = sUrl;

          if (link.download !== undefined) {
              //Set HTML5 download attribute. This will prevent file from opening if supported.
              var fileName = sUrl.substring(sUrl.lastIndexOf('/') + 1, sUrl.length);
              link.download = fileName;
          }

          //Dispatching click event.
          if (document.createEvent) {
              var e = document.createEvent('MouseEvents');
              e.initEvent('click', true, true);
              link.dispatchEvent(e);
              return true;
          }
      }

      // Force file download (whether supported by server).
      if (sUrl.indexOf('?') === -1) {
          sUrl += '?download';
      }

      window.open(sUrl, '_self');
      return true;
}
module.exports = download