Avoid Global Variables
The first is to avoid Global Variables or at least minimize the use of the same. It is recommended to use local variables instead of the Global ones. These include all types of data, functions and objects. The Global variables can be overwritten by other scripts and is, thus, best to avoid or minimize their usage. The use of local variables and closures is advisable.
Use of ‘var’
Strict Style of Coding
The action to Stick to a Strict Style of Coding constitutes another best feature. The lax style of coding will hurt the developer in case of shifting to another environment or handing over the same to another one as a valid code is a secure one.
Easily understandable and short name
Use Shortcut Notations
The usage of shortcut notations keeps the code easier to read once the developer receives it and snappy too.
Modularization of the code
The practice of modularizing the code and keeping the same specialized is a helpful one. Moreover, it is easier as well as exciting to write a function that carries out all functions.
Carry out enhancement in a Progressive manner
Avoid the use of eval()
The eval() function is not a mandatory one for most of the cases. It allows the developer to run the text as code. Using this function also poses a security problem as this function allows running of any arbitrary code.
Use of Parameter Defaults
Assigning default values to arguments is a good practice as undefined values have the potential to break the code of the developer. Undefined is generally referred to denote the value of a missing argument.
Placing of scripts at the bottom of the page
Placing the script at the bottom of the page helps in the fulfillment of the chief goal to make the loading of the page as fast and quickly as possible for the user. The browser will not be able to continue further unless the entire file is loaded making the user to wait for a relatively long time to notice a progress.
Utilization of JS Lint
The use of JS Lint is another good practice. It is a debugger. Pasting JS Lint in the script will result in scanning the script for any visible errors and issues in the code.
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