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Autofocus input text field

Autofocus the first visible input text field when a page is loaded

Від 28.04.2015. Дивіться остання версія.

// ==UserScript==
// @name          Autofocus input text field
// @description   Autofocus the first visible input text field when a page is loaded
// @version       1.0.2
// @author        wOxxOm
// @namespace     wOxxOm.scripts
// @license       MIT License
// @run-at        document-start
// ==/UserScript==

var TEXT_FIELD = ' text number search url ';

document.addEventListener('DOMContentLoaded', function() {
  if (TEXT_FIELD.indexOf(document.activeElement.type) >= 0)
    return;
  // find text inputs inside visible DOM containers
  var inputs = document.getElementsByTagName('input');
  var visible = [];
  for (var i=0, input, il=inputs.length; i<il && (input=inputs[i]); i++)
    if (TEXT_FIELD.indexOf(' '+input.type+' ') >= 0) {
      var n=input, style;
      while (n && n.style && (style=getComputedStyle(n)) && style.display!='none' && style.visibility!='hidden')
        n = n.parentNode;
      if (!n || !n.style) {
        visible.push(input);
        if (input.value)
          break;
      }
    }
  if (visible.length) {
    var toFocus = visible[0];
    // if empty, try to select an identically named input field with some text (happens on some sites)
    if (!toFocus.value)
      for (var i in visible)
        if (visible[i].value && visible[i].name == toFocus.name
            && (!visible[i].form && !toFocus.form || visible[i].form.action == toFocus.form.action)) {
          toFocus = visible[i];
          break;
        }
    toFocus.focus();
    toFocus.select();
  }
});