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RANDOM JQUERY SNIPPETS

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Useful random jQuery snippets.

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  1. //Remove a word with jQuery
  2. var el = $('#id');
  3. el.html(el.html().replace(/word/ig, ""));
  4.  
  5. //jQuery timer callback functions
  6. window.setTimeout(function() {
  7.  $('#id').empty();
  8. }, 1000);
  9.  
  10. //Verify that an element exists in jQuery
  11. if ($('#id').length) {
  12.  // do stuff
  13. }
  14.  
  15. //Dynamically adding <div> elements with jQuery
  16. $('<div>hello<\/div>').appendTo(document.body);
  17.  
  18. //Searching for Text with jQuery
  19. //This function performs a recursive search for nodes that contain a pattern. Arguments are //a jQuery object and a pattern. The pattern can be a string or a regular expression.
  20. $.fn.egrep = function(pat) {
  21.  var out = [];
  22.  var textNodes = function(n) {
  23.   if (n.nodeType == Node.TEXT_NODE) {
  24.    var t = typeof pat == 'string' ?
  25.     n.nodeValue.indexOf(pat) != -1 :
  26.     pat.test(n.nodeValue);
  27.    if (t) {
  28.     out.push(n.parentNode);
  29.    }
  30.   }
  31.   else {
  32.    $.each(n.childNodes, function(a, b) {
  33.     textNodes(b);
  34.    });
  35.   }
  36.  };
  37.  this.each(function() {
  38.   textNodes(this);
  39.  });
  40.  return out;
  41. };
  42.  
  43. //Case-Insensitive Contains Check
  44. //By using case-insensitive regular expressions, this becomes rather easy:
  45. var pattern = /exp/i;
  46. $('#id').filter(function() {
  47.  return pattern.test($(this).text());
  48. });
  49.  
  50. //Reload an IFrame
  51. //Accessing the contentWindow property to obtain the location object.
  52. $('#iframe').each(function() {
  53.  this.contentWindow.location.reload(true);
  54. });
  55.  
  56. //Callback for IFrame Loading
  57. //With the onload event, your code is called when an IFrame has finished loading.
  58. $('#iframe').load(function() {
  59.  // do something
  60. });

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