Advantages of Using Attributes in JavaScript

Attributes in JavaScript are commands that define the nodes to be implemented in DOM. With the help of attributes the nodes could be identified on the style it adopts, references, or even the value and format of the node.

By adding attributes, the node could easily interact with nodes especially they are implemented only as texts or data.

The main advantage in implementing attributes in JavaScript is based on the fact that developers could be as expressive as they can when they want to implement an Ajax based application. Customization of experience could be easily achieved through attributes.

But attributes is not just about appending data on the nodes to tell the DOM what they really are. Developers have to remember that the behavior of the attributes is not like the nodes wherein they could have parent or child nodes.

The attributes implemented on the first node will not automatically be implemented in its child nodes. This is actually extra work but it has to be done especially when the nodes have to maintain their behavior throughout the application.

But there is an exception - when you build the application together with namespaces on the attributes, the namespaces will be automatically be interpreted in DOM.

There are basically two types of attributes – the first version is called the explicit value. Instead of attributes providing what the node should be, the developers could customize the interaction with their own commands.

The second version is an attribute with an implicit value. This type of attribute gets its configuration automatically from its intended function.

Developers do not need to check the additional attributes from implicit valued attributes but browser concerns suggests that you need to double check your attributes. They look very simple but could be difficult when attributes are not properly implemented.

Efficient Value Required

Proper usage of attributes could be summed in one phrase, “use it with something or not at all.” DOM has to read something from the attributes or else the whole node will fail.

All forms of attributes that could be integrated with DOM only if the nodes contain something that should be interpreted. That means if the nodes does not have any data at all and just heavy in functions, DOM might not be able to interpret the node entirely. It will just reply with a null signaling that it encountered an error.

Browser Problems

Implementing attributes in JavaScript is easily one of the most challenging tasks for developers because of browser incompatibility. Attributes was supposed to be the standard for defining JavaScript nodes but apparently, most browsers have different ideas about the attribute. As of this writing, Only Safari 3.0 can fully understand the attributes integrated in nodes.

The latest and previous browsers of IE, Firefox and Opera all have different interpretations of attributes that it could easily confuse a developer. It is a sad fact but developers have to recreate their online applications especially the attributes. The browsers mentioned have their respective attributes interpretation especially for IE wherein it translates the attributes to become IE compatible.