Js tutorial - part 1 - variables

okay, so we ended HTML tutorial ( i hope, if you didnt, you can always look it up at https://hacknorris.blogspot.com/search/label/HTML =]

differences between '=' chars:

= is... just is. mostly used in defining variable or assigning data to or from external api's

== is equal to. same as 'normal' = in maths

=== is strict equal. cant be provided with numbers after commas and so on. rarely used

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firstly - defining varibles using var keyword:

var x = y

saves variable with setted data

var Variable

saves variable without data. for example to set it up later. eg. from user input.

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secondly - defining variables using let keyword:

let x = y

! important - you cant change value if you use let !

(but you can set other value if outside same block)

(not possible to make it empty like in var)

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thirdly - defining variables using const keyword:

const x = y 

! important you cant either set other value in block and outside !

(not possible to make it empty like var)

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(just hoping its correct and readable :'D )