let vs var

let vs var

  • In recent past var was the only way to declare variables

  • While var worked it a lot of confusing issues that came along with it

  • let was introduced in the latest release of Javascript, ES6 to address these issues

  • While var is still in use for legacy codebases, it is a recommended best practice to use let instead of var going forward


// declaring a variable using var
var name = "Jen"


// declaring a variable using let (best practice)
let name = "Jen"

Click here for more information on the differences between let and var