Posts Tagged ‘JavaScript’

Want to populate dynamically combobox-listbox-drop-down using javascript? Let us see a very simple script to do this. First let us see createElement() of document object in javascript.//Create a table element dynamically var table = document.createElement("table");//Create a select element dynamically var select = document.createElement("select");//Create a option element dynamically var option = document.createElement("option");Thus, createElement method takes a parameter which is the string that specifies the name for the element node ...

Usually AJAX requests are send through GET method. This is because there are few parameters that one send while sending a request through AJAX and also it is relatively easy to create and send a GET method request. Following code is used generally to create a GET request through AJAX.function getXMLHttpRequestObject() { var xmlhttp; /*@cc_on @if (@_jscript_version >= 5) try ...

You must have seen orkut style status update box where in the details can be modified by clicking on it. Once user click the details, details gets populated inside a textbox and an update button. Once update button is clicked, the data gets updated in database.Similar status update box is available in wordpress ...

Remote procedure call (RPC) in javascript is a great concept of creating rich web applications. First we will see some background about RPC using JavaScript Object Notation (JSON). See following quote from Wikipedia entry of JSON-RPC. JSON-RPC is a remote procedure call protocol encoded in JSON. It is a very simple protocol (and very similar to ...

You must have seen the blur effect of html elements like table, div where the opacity of these elements are slowly made to transparent or opaque. This can be acheived through javascript.Internet Exlporer supports a CSS attribute called filter, wherein you can apply lot of different filter options available in browser. There are currently three categories of filters - Visual filters and Reveal/Blend Transition filters. ...

File uploading using AJAX is not possible. AJAX doesn't actually post forms to the server, it sends selected data to the server in the form of a POST or GET request. As javascript is not capable of grabbing the file from the users machine and sending it to the server, it's just not possible with AJAX. You have to resort to regular old form submit.If ...