madhairsilence
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Android 4.3 – Don’t install Now
OK!! The title is a bit blunt and might give an impression that am an Anti Android guy. Wait wait!! An anti android fan will not own a Nexus 4 and install Android 4.3 within 4 hrs after it was released. Yup!! I did. I am an Android enthusiast. At once I heard that JB … Continue reading
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The difficulty is always in the first programming language we start with. Lucky people start with the toughest language. Toughest here, I mean , the language which imposes too many strict rules and very few short cuts. The great example would be our very own C language. I started my programming life with C language. … Continue reading
This is all about the famous facebook. Every application has a bug and facebook is not a exception. I dont think I have to use too many words here. Just the image would do. Dont get confused with the words over there. I changed my facebook language to Leet Speak. (noobz means friends). Lets see … Continue reading
- OOPS!! Am not screaming. I mean Object oriented programming. OOPS here , OOPS there and OOPS everywhere. Does jQuery support object oriented programming? The answer is a big YES*. I put a * next to YES. Did you see that. It means Conditions Apply. We will talk about the conditions apply later. Class Declaration Let us create a simple class. var simpleClass = { }; Thats it?. Attributes? Methods ?. Where are they?. Lets see how can we fit those in inside this empty class. Attributes and Behaviours var simpleClass = { testAttribute : 'test', // atttribute testMethod : function() //method { return testAttribute; } }; Now we instantiate this Object. var simpleClassObj = new simpleClass(); Perfect!!!!. Conditions Apply Private Variable There aint any private variables here. To access the testAttribute, just use simpleClassObj.testAttriute; Enough!! Dynamic Attribute Insertion Suppose, i use the statement simpleClassObj.testAttribute2 = 'test2'; Do you think, it will work. compilation error??. Duh!. It will still work. Our exceptional system will modify the source class for us ( Amazing huh!!). You can clearly see, jQuery has sold the encapsulation feature for duck typing. Only god knows, the actual state of an object here. Why OOPS in jQuery Now, the question. If not for encapsulation, why do we need to go for OOPS approach in jQuery. The answer is Organization. Consider a simple example HTML; <input type="text" name="test-name" id="test-id" class="test-class" style="test-style"/> If you want to manipulate this dom object in jQuery , you go to do this $('#test-id').val() // get value $('#test-id').attr('name') // get name $('test-id').html() //get inner HTML Can you see, these three simple statements have absolutely no similarity (except the object part). Imagine a similar style of code , in a page which has plenty of dom objects and widgets. Do you think its easy to understand??. Now lets convert this to a simple object Lets create a simple abstract class ( Dont search for the abstract keyword. We dont have one. if you want an abstract class, better YOU dont instantiate it) var syndrome = { doHide : function(){ this.hide('slow'); }, doShow : function(){ this.show( 'slow' ); }, doDisable : function(){ this.attr('disabled', 'disabled'); }, toggle : function(){ this.toggle(); }, getStyle : function(){ return this.attr('style'); }, setForeground : function(color){ var style = 'color:'+color+';'; this.attr('style', style+this.getStyle()); }, setBackground : function(color){ var style = 'background-color:'+color+';'; this.attr('style', style+this.getStyle()); }, getName : function(){ return this.attr('name'); }, getValue : function(){ return this.attr('value'); }, getClass : function() { return this.attr('class'); }, getContent : function(){ return this.html(); } }; Its easily readable, you can see what am doing. Just put some common methods. Now , lets see how can we use this in our above example. var testObj = $('#test-id'); //get the dom object $.Extend( testObj, syndrome ); //extending the abstract class. So , the method should be available here. testObjtestObj.getValue(); // Get value testObj.getName(); // Get Name testObj.getContent(); // Get content Now this looks neat and clean. Now Imagine the same scenario, a lot of components and widgets. What will you have . Just a list of $.Extend statements with pure object interaction. Clean!. Try it!. you will love it.
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