# Javascript tips and tricks to Optimize Performance

**Published by:** [Raymon Casey](https://paragraph.com/@raymon-casey/)
**Published on:** 2023-03-31
**URL:** https://paragraph.com/@raymon-casey/javascript-tips-and-tricks-to-optimize-performance

## Content

Use Array Filter It is a small hack to filter out bucket of elements from the array pool. This method creates an array filled with all array elements that pass a test (provided as a function). According to requirement create a callback function for non-required elements. Using String replace function to replace all the values The String.replace() function allows you to replace strings using String and Regex.Basically this function replaces the string at its first occurrence. But to replace all using replaceAll() function, use /g at the end of a Regex. Use breakpoints and Console for Debugging With the help of breakpoints or debugging points you can set multiple barriers to rectify source of error at every barrier. Convert to floating number without killing performance Often we use math.floor, math.ceil and math.round for eliminating decimals. Instead of using them use “~~” to eliminate decimals for a value. It is also helpful in increasing performance when it comes to micro optimizations in a code.

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