Capitalize First character in a Javascript String

var capitalized = capitalizeMe.substr(0, 1).toUpperCase() + capitalizeMe.substr(1);

var capitalized = capitalizeMe[0].toUpperCase() + capitalizeMe.substring(1);

var capitalized = capitalizeMe.charAt(0).toUpperCase() + capitalizeMe.substring(1);

var capitalized = capitalizeMe.slice(0,1).toUpperCase() + capitalizeMe.slice(1, capitalizeMe.length);

var capitalized = capitalizeMe.substring(0, 1).toUpperCase() + capitalizeMe.substring(1);

Custom image for facebook share - Open in popup

<a class="facebook" target="_blank" onclick="return !window.open(this.href, 'Facebook', 'width=640,height=300')" href="http://www.facebook.com/sharer/sharer.php?u=YOUR_URL">Facebook</a>

JQuery URL parser function

// Parse URL Queries Method
(function($){
    $.getQuery = function( query ) {
        query = query.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
        var expr = "[\\?&]"+query+"=([^&#]*)";
        var regex = new RegExp( expr );
        var results = regex.exec( window.location.href );
        if( results !== null ) {
            return results[1];
            return decodeURIComponent(results[1].replace(/\+/g, " "));
        } else {
            return false;
        }
    };
})(jQuery);

// Document load
$(function(){
    var test_query = $.getQuery('test');
    alert(test_query); // For the URL /?test=yes, the value would be "yes"
});

Reference:

http://www.kevinleary.net/jquery-parse-url/

Change URL parameter value of a variable in a Javascript Regular Expression (RegEx)

function changeParamByName(href, paramName, newVal) {

var tmpRegex = new RegExp("(" + paramName + "=)[a-z]+", 'ig');

return href.replace(tmpRegex, '$1'+newVal);

}

 

var href = changeParamByName("http://domain.com?var=thisIsOld&bca=something&b=2&c=3","bca","theNewValue");

console.log(href);










Reference:




http://blog.adrianlawley.com/jquery-change-url-parameter-value/

Changing the URL of parent

In some cases to make the parent window to load a different URL ( from IFRAME and pop etc.,), use

window.top.location.href = "http://www.site.com"; 

To just refresh the parent window use

parent.location.reload();

To get the parent URL as a string (in cases to modify parent URL), use this,

parentlocation = document.referrer;

Javascript function to get parent URL

This is usefull in case of finding parent URL from iframe or a popup etc.,

function getParentUrl() {
    var isInIframe = (parent !== window),
        parentUrl = null;

    if (isInIframe) {
        parentUrl = document.referrer;
    }

    return parentUrl;
}