Others - Javascript

Commands

• // => Single-line Comment
  • /* */ => Write a multi-line comment
• "use strict" => Puts some restrictions on the way of writing code
• eval() => Evaluate like a calculator
• var.toFixed(n) => Prints up to n decimal numbers
• Encoding
  • btoa("value") => To create a Base64 encoded ASCII string from the binary data, For binary data consisting of 8-bit bytes
  • atob("value") => Decodes a string of data that was encoded using Base64 encoding back to normal text
• Audio
  • var = new Audio("filePath")
  • var.play()
• Forms
  • inputs.every(input => checkValidity()) => Returns true if all valid
  • inputs.every(input => reportValidity()) => Returns true if all valid and displays error message

Inspect Element

• Basic
  • ctrl + shift + R => If site crashes then press this to reload everything
  • ctrl + shift + I => Inspect in a Web Browser
• Sources
• Elements
• Console
  • Numbers are represented in Blue
  • Strings are represented in Black
  • shift + enter => To move to next line without executing code
  • Tricks
    • document.body.contentEditable = true => Lets you edit a website
• Network
  • Throttling => Change the speed of Internet speed
• Performance
• Application
  • Storage
• Security
• Lighthouse
  • Generate Report => Gives report of your website based on Core Web Vitals