Regular Expressions in JavaScript Tutorial | RegEx

Introduction to Regex in JavaScript, Learn its applications for form input validation, Splitting string, replacing string, pattern matching.
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[@julianstorm7722]

Whenever I stumble upon a roadblock I come here to get a better explanation. Never disappoints. Cheers man

[@hemantchauhan4490]

I searched a lot over youtube but didnt find any good video....yous one is the best for learners.... it really made me learn much about regex

[@Techsithtube]

I am glad that you learnt . Thanks for watching Hemant. Also check out other javaScript topics on my channel.

[@Neworldexport]

It's always a great pleasure to learn back here with you !

[@SKU009]

Thanks Techsith for sharing best JavaScript Regular Expression Tutorial.

[@humanbeing9106]

aap jaise techer honge toh beda garg hee hoga india ka

[@ishumishra8104]

bhai unki kya gLti hai tum ganwar ho simple english samjh ni aari tumhe

[@aidangasim]

this learning type is such vivid clear and understandable,its just covered gold,,,thans so much i got regex now more deeply...

[@Techsithtube]

Glad you are able to do it. Keep on learning!

[@AngaarUriakhil]

Comprehensive and short. Thanks.

[@BigyanChap]

I hit like to your videos way before I watch them complete.

[@Techsithtube]

Thanks :)

[@hoogalaga]

Thanks for the introduction!

[@newsmix8659]

very informative, 'rejEx' made simple! congrats techsith!

[@davidconnelly]

Outstanding. A quick link to some cheat sheets would have made this one of the best tutorials on the web.

[@Techsithtube]

Thanks David. :)

[@surajkantsingh6916]

are guru ji dil jeet liya aapne

[@dylanoh3425]

Clean cut tutorial, love it!

[@jigsaw009]

I have learnt quite a lot of JS knowledge from yr channel. U sir are one of a kind :)

[@venum1423]

Nice explanation

[@nishanthsalian3479]

You teach so well. Thanks a lot.

[@MoT-MasterOfThings]

Very helpful. Regex is very poerful tool for developer. Please make video for lookahead, look forward, like things in regex. Thanks for helpful videoa.

[@Techsithtube]

This was a basic intro but i plan to make more videos on regex. Thanks for watching!

[@kaviarasan8249]

awesome bro enjoyed lot

[@Techsithtube]

Thank for watching Kavi :)

[@rajasekhar5135]

Do u have udemey I want angular 10 course can u??

[@denniskamonde6836]

Thanks Sir you're the man! Great job

[@thenotorious3763]

From Tamil Nadu

[@rahuldavamani345]

me too

[@sathishthoughts4002]

Useful one 😊

[@dearnavaneet]

Excellent

[@DevangPatil]

Excellent!

[@himanshuupreti619]

Great video sir. keep it up.

[@dhilipkumar2273]

Could anybody answer if I want to match other languages with a regex pattern, let's say example Japanese character こんにちは what would be the pattern?

[@Techsithtube]

Dhilip, when you try to match characters from other languages you can do that by matching unicodes , because ultimately that is what they are.

[@raymnrae8298]

Nice Video!!

[@zeroxcrusher]

Very good tutorial. Im still very new to web development. Can you give me an example on where exactly are developers using regex?

[@Techsithtube]

Lots of places. Finding things within a string, string validation, replacing parts of a string with other strings

[@thanhtikezaw9982]

What is g mean sir

[@rthosarrohini]

I like very much.

[@silverS1231]

Brilliant tutorial :)

[@saikalemil2157]

Thank you!

[@WasimKhan-0801]

Great information sir

[@Techsithtube]

Thanks for watching!

[@ritwiksoniful]

why you downloaded wrong voice pack

[@seenuvasanv]

Thanks

[@RSTao77432]

i have this error in Javascript when trying to use regex {unexpected token: regular expression literal}.. Do you know how i may fix this?

[@Techsithtube]

Ryan, what is cod you are trying to execute? I can take a look

[@RSTao77432]

I've been trying to set up regex validation on a form to allow these "@-|&#//?" but block these: "}{(Double & Single quotes,)"
so far i've tried multiple different functions incorporating regex but I can't get it to work

[@RSTao77432]

I have started off with
function charReplace(){
var A = document.getElementById("MainSearchForm").getElementByTagName("input").value; then trying to add the regex into this function and calling the function bellow after the closing }

[@RSTao77432]

Also tried adding an onPaste event to prevent copying and pasting code...

[@RSTao77432]

This is another example i tried
var a = function filterIn() {
var input = document.getElementById(inputForm).addEventListener('onchange', regexFunc);
function regexFunc(e){
var a = regex /[^a-z\0-9\@\-]/gi;
input.value = input.value.replace(regex, "");
}
}
filterIn();
but its a bit jumbled as i've been editing it loads trying to force it to work......

[@rahulrijhwani3834]

when you were giving minimum 1 and max 9 a's. it was matching at 11 a's as we
. why so?

[@DouglasVicentini]

you probably used some whitespaces between the numbers inside the curly braces. Like this: {1, 3}. It also happened with me. It worked using {1,3}, without whitespaces

[@christian_turner]

so awesome

[@phanindrakumarpulletikurti]

Is it new series? or single episode?

[@Techsithtube]

This was a basic intro but i plan to make more videos on regex. Thanks for watching!

[@josevSang]

when i grow up i want to be like @techsith

[@Techsithtube]

Maasai you can be even better than me. :)

[@josevSang]

@@Techsithtube Thanks for the encouragement, and thank you for making time to create such wonderful tutorials

[@josevSang]

@@Techsithtube I like the way you always explain in simple terms without missing a single details. You are truly a student's favorite.

[@Techsithtube]

My advise would be to focus on fundamentals of anything you learn . and you will master it in no time.

[@omarborji8062]

still dont understand the ? what mean exactly cuz u pass it so fast but thank u so much

[@humanbeing9106]

sir india me kyu reh rahe ho jab hindi me tutorials nhe bana sakte

[@Techsithtube]

bana to sakta hu hindi mai, koi dusri channel per banani hongi.

[@humanbeing9106]

@@Techsithtube plss sir agar aap aisa kartr hai toh kuch hee saal me google pe no. 1 world riches person india ka hoga chahe wo fir koi bhi ho sir

[@ishumishra8104]

@@humanbeing9106 lamba mat socho

[@ishumishra8104]

bhai bolna seekh le pehle India me rhe to ganwar rhe kya bhai you have to grow man!!

[@humanbeing9106]

agar nhe jana toh hindi language me banao tutorial taki 5 crore indians ko ye video samajh me aaey.

[@shrutisaxena1303]

5 crore Indians ko English aati hogi I guess.....

[@humanbeing9106]

koi comedy circus me chale jao

[@humanbeing9106]

aap padah nhe rahe ho balki ye dikha rahe ho ki mai english kitni achi bolta hoo

[@DebjitMajumdar]

Nope not great content sadly.