JavaScript Tutorial

Javascript Check if Cookies are Enabled Javascript Get Element Height Javascript Change Button Color Javascript Refresh Page Every 5 Seconds Allow only Numbers in Textbox Javascript Javascript Get Client Ip Address Javascript Clear form After Submit Javascript Change Title and Meta DescriptionTags Javascript foreach Object Draggable and Resizable Div Javascript Javascript Capitalize First Letter of Each Word Input Type Date Disable Future Date Javascript Check if date is in the Past Javascript Add Class onClick Javascript Date Yesterday Javascript Check if a Date is contained in an Array - React Js | Vue Js Javascript Random Date Between Two Dates Javascript Check if Date is Empty Find object by id in array Javascript Javascript Popup Input Get Domain From Email Javascript Javascript Check Email Domain Type Javascript Add Text to Div Add Remove Class to Body - Toggle Class Leap Year Program in Javascript Javascript split array to Chunks Javascript Replace Underscore with Space and Capitalize Js Add Space Before Capital Letter Javascript Get Day from Date Javascript Get Element By ClassName Javascript Wait 5 Seconds Javascript Paste from Clipboard Javascript Convert SGPA to Percentage Javascript Change Dynamic Open Graph Meta Tags Title & Description Javascript Slide Left or Right to Seek Javascript Calculate Sum of the First N Natural Numbers JavaScript: Get the First and Last Elements from an Array Jquery Check Clicked Element is Div or Not Jquery Create UL and LI tags dynamically with JSON data Jquery Toggle Element Visibility Use jQuery to Dynamically Change Page Title and Meta Description jQuery Change Image Src Dynamically JQuery Scroll to Div Id JQuery Get Element Height and Width Jquery Scroll to Top Button Jquery Radio Button Get Checked Value Javascript Date Format Javascript Get Current Year Javascript Get Last Date of Month Javascript Add Space Every 4 Character Javascript Change Font Awesome Icon onclick Javascript Random Future Date Generator Javascript Check if Element is in Array How to Dynamically Add a Font Awesome Icon with Javascript Javascript Check if Date is in Current Month Javascript Handling Multiple Inputs with a single onchange Handler Javascript Get Operating System Javascript Add Values to an Array of Objects Javascript Only One Checkbox Selected at a Time Javascript Remove Property from Object Javascript Add 0 to Single Digit Javascript Sum Array of Objects Javascript Track Time Spent on Page Javascript window.performance.now() How to Detect Browser and Tab Closing in Javascript Javascript Get Last Two Digits of Year

Javascript window.performance.now()

TheJavascript window.performance.now() method returns a timestamp, specifically a high-resolution time stamp measured in milliseconds, indicating the number of milliseconds elapsed since the start of the page's navigation. This method provides a way to measure time more precisely than the traditional Date object, especially for performance measurements or animations where accuracy is critical.

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Window Performace Now Example

const a =  window.performance.now()

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Javascript window.performance.now()

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Window Performace Now Example