$(document).ready(function() {
    // Detect ios 11_x_x affected  
    // NEED TO BE UPDATED if new versions are affected
    var ua = navigator.userAgent,
    iOS = /iPad|iPhone|iPod/.test(ua),
    iOS11 = /OS 11_0|OS 11_1|OS 11_2/.test(ua);

    // ios 11 bug caret position
    if ( iOS && iOS11 ) {
        // Add CSS class to body
        $("body").addClass("iosBugFixCaret");
    }
});

console.log(document.readyState);

//監聽，當readystate狀態改變就觸發(loading,interactive,complete)
document.onreadystatechange = function () {

  console.log(document.readyState); 

  if (document.readyState == "loading") {
    //這邊一定不會進來，因為網頁一開始狀態就是loading，沒有改變，也不會觸發onreadystatechange
    console.log('The document is still loading.');
  }
  if (document.readyState == "interactive") {
    console.log('The document has finished loading and the document has been parsed but sub-resources such as images, stylesheets and frames are still loading.');
  }
  if (document.readyState == "complete") {
      // document is ready. Do your stuff here
    console.log('The document and all sub-resources have finished loading. The state indicates that the load event is about to fire.');
  }
}

const asyncReadFile = async function () {
  const afile = await readFile('/etc/fstab');
  const bfile = await readFile('/etc/shells');
  console.log(afile.toString());
  console.log(bfile.toString());
};