Posts Tagged ‘Javascript’

Javascript optimization tips

Posted: February 8, 2015 in General, HTML, PHP, Technology
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1. Minify Script Files: – Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time. There are many compression tools available in market. Even you can write own small script to minify java script, you just need to rename variable/remove extra space etc.

2. Use advantage of reference types: – JavaScript, much like other C-based languages, has both primitive and reference value types. Primitive types such as strings, Booleans and integers are copied whenever they are passed into a new function; however reference types such as arrays, objects and dates are passed only as a light-weight reference. You can use this to get the most performance out of recursive functions, such as by passing a DOM node reference recursively to minimize DOM traversal, or by passing a reference parameter into a function that executes within an iteration. Also, remember that comparing object references is far more efficient than comparing strings.