Posts tagged dom

Google Maps v3 OverLay Control onclick issue

Apr 2nd

Posted by editor in Development

The issue causes bubbling in DOM and  pass all the events to Google Maps Event handler. Click, DoubleClick, MouseUp/Down, etc… I had the problems with input boxes and made this up as temporary solution. (I tried canceling bubbling from overlay DIV too, It didn’t work)

$("input, textarea").click(function(ev) {
    $(this).focus();

    tws_cancelEvent(ev);
});

or

var _input = document.getElementsByTag('input');
for ( ... ) {
     /* bind the click event for each item */
}

this CancelEvent function is generic. working for all browsers including old  age ones.

/*
 * ----------------------------------------------------------------------------
 * tws_cancelEvent
 * --------------------------------------------------------------------------
 */
var tws_cancelEvent = function(event) {
    /* if no event is passed, pull the event from the window object */
    var ev = (event || window.event);

    if (ev) {
        /*
         * this cancels the bubble in order to prevent the event from
         * bubbling up the dom chain (eg: OOB script won't log link
         * click)
         */
        ev.cancelBubble = true;

        if (ev.stopPropagation) {
            ev.stopPropagation();
        }

        /*
         * this sets the return value to false and stops the default
         * action from occurring (eg: clicks on links won't navigate)
         */
        ev.returnValue = false;

        if (ev.preventDefault) {
            ev.preventDefault();
        }
    }

    /* return false in case we want to use in an onclick property */
    return false;
};
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PHP DOMDocument short-tag issues

Jan 28th

Posted by editor in Development

Using the single quotation mark while creating new elements and passing empty string with single quotation marks will result as short tag! for example:

function createTag($tag = null, $content = null, $id = null, $class = null) {
	if ($tag == null) {
		return $tag;
	} else {
		if (!isset($content)) {
			$tag = $this->dom->createElement($tag);
		} else {
			$patterns = array("(&)");
			$replaces = array("&");
			$result = preg_replace($patterns, $replaces, $content);

			$tag = $this->dom->createElement($tag, $content);
		}

		if (isset($id)) {
			if (preg_match("/(^[a-z]{1}[a-z0-9_]+)$/", $id)) {
				$tag->setAttribute("id", $id);
			} else {
				/* todo: throw exception */
				throw new Exception("Invalide id -> " . $id);
			}
		}

		if (isset($class)) {
			if (preg_match("/(^[a-z]{1}([a-z0-9_-\s])+)$/", $class)) {
				$tag->setAttribute("class", $class);
			} else {
				/* todo: throw exception */
				throw new Exception("Invalide class -> " . $class);
			}
		}

		return $tag;
	}
}
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PHP DOMDocument appendHTML

Jan 26th

Posted by editor in Development

Appending returned document fragment is enough for this operation.

public function appendHTML($rawHtml)
{
	$tmp = $this->createDocumentFragment();
	$tmp->appendXML($rawHtml);
	return $tmp;
}

This function might throw invalid operation exception or parsing issues if your html string has no valid syntax

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