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//if they DID upload a file...
if($_FILES['photo']['name'])
{
  //if no errors...
	if(!$_FILES['photo']['error'])
	{
		//now is the time to modify the future file name and validate the file
		$new_file_name = strtolower($_FILES['photo']['tmp_name']); //rename file
		if($_FILES['photo']['size'] > (1024000)) //can't be larger than 1 MB
		{

mateuszkocz

  var ul = document.getElementById("list");
  ul.insertAdjacentHTML("beforeEnd", "<li>A new li on the list.</li>");
  ul.insertAdjacentHTML("beforeEnd", "<li>Another li!</li>");

.insertAdjacentHTML("beforeBegin", ...)
.insertAdjacentHTML("afterBegin", ...)
.insertAdjacentHTML("beforeEnd", ...)
.insertAdjacentHTML("afterEnd", ...)

mateuszkocz

!function(exports){
    var class_list = !!document.body.classList;
    var s = '(\\s|^)'; // space or start
    var e = '(\\s|$)'; // space or end

    function getRegex(className){
        return new RegExp(s + className + e, 'g');
    }

    exports.addClass = function(element, className){

mateuszkocz

<form id='registration' name='registration' action='/register'>
    <input type='text' name='username' value='carlos'>
    <input type='email' name='email' value='[email protected]'>
    <input type='number' name='dob' value='1940'>
    <input type='submit' onclick='return sendForm(this.form);'>
</form>

mateuszkocz

function extend( a, b ) {
  for( var key in b ) {
    if( b.hasOwnProperty( key ) ) {
      a[key] = b[key];
    }
  };
  return a;
}

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/* You can aslo add */
canvas {
    image-rendering: optimizeSpeed;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: optimize-contrast;
    -ms-interpolation-mode: nearest-neighbor;
}

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function getOffset( el ) {
  var offsetTop = 0, offsetLeft = 0;
  do {
    if ( !isNaN( el.offsetTop ) ) {
      offsetTop += el.offsetTop;
     }
     if ( !isNaN( el.offsetLeft ) ) {
       offsetLeft += el.offsetLeft;
    }
  } while( el = el.offsetParent ) 

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// Instead of this..
if(callback) {
  callback();
}

// you can use this.
callback && callback();

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Element.prototype.on = Element.prototype.addEventListener;

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var $ = document.querySelectorAll.bind(document);