CODEWITHSUNDEEP
javascriptregex
EHerman
EHerman

Reputation: 1892

Regex remove all special characters except numbers?

I would like to remove all special characters (except for numbers) from a string. I have been able to get this far

var name = name.replace(/[^a-zA-Z ]/, "");

but it seems that it is removing the first number and leaving all of the others.

For example:

name = "collection1234"; //=> collection234

or 

name = "1234567"; //=> 234567

Upvotes: 53

Views: 355711

Answers (6)

Abin Baisil
Abin Baisil

Reputation: 1

Excluding special characters: /^[^@~`!@#$%^&()_=+\\';:"\/?>.<,-]$/ this regular expression helps to exclude special characters from the input.

Exclude special characters and emojis : /^([^\u2700-\u27BF\uE000-\uF8FF\uDD10-\uDDFF\u2011-\u26FF\uDC00-\uDFFF\uDC00-\uDFFF\u005D\u007C@~`!@#$%^&()_=+[{}"\\';:"\/?>.<,-\s])$/ this is a regular expression to exclude both special characters and emojis from the input. Given are the Unicode ranges of the emojis , mathematical symbols and symbols in other languages.

Upvotes: 0

Balaji
Balaji

Reputation: 10907

to remove symbol use tag [ ]

step:1

[]

step 2:place what symbol u want to remove eg:@ like [@]

[@]

step 3:

var name = name.replace(/[@]/g, "");

thats it

var name="ggggggg@fffff"
var result = name.replace(/[@]/g, "");
console .log(result)

Extra Tips

To remove space (give one space into square bracket like []=>[ ])

[@ ]

It Remove Everything (using except)

[^place u dont want to remove]

eg:i remove everyting except alphabet (small and caps)

[^a-zA-Z ]


var name="ggggg33333@#$%^&**I(((**gg@fffff"
var result = name.replace(/[^a-zA-Z]/g, "");
console .log(result)

Upvotes: 9

David Miller
David Miller

Reputation: 517

This should work as well

text = 'the car? was big and* red!'

newtext = re.sub( '[^a-z0-9]', ' ', text)

print(newtext)

the car was big and red

Upvotes: 1

Jerry
Jerry

Reputation: 71538

Use the global flag:

var name = name.replace(/[^a-zA-Z ]/g, "");
                                    ^

If you don't want to remove numbers, add it to the class:

var name = name.replace(/[^a-zA-Z0-9 ]/g, "");

Upvotes: 83

Ron Rosenfeld
Ron Rosenfeld

Reputation: 60224

If you don't mind including the underscore as an allowed character, you could try simply:

result = subject.replace(/\W+/g, "");

If the underscore must be excluded also, then

result = subject.replace(/[^A-Z0-9]+/ig, "");

(Note the case insensitive flag)

Upvotes: 16

T-Dor
T-Dor

Reputation: 594

To remove the special characters, try

var name = name.replace(/[!@#$%^&*]/g, "");

Upvotes: 22

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