How to remove string between two words in javascript

Question

How to remove string between two words in javascript.

var myString="?specs=f_demo%3a8+GB!!4!!||f_test%3a2+GB!!2!!||f_test%3a4+GB!!3!!||f_demo%3a8+GB!!4!!||f_demo%3a16+GB!!5!!||||Category:Notebooks"

I want to remove all word start with "f_test" and end with "||".

output string like :

?specs=f_demo%3a8+GB!!4!!||f_demo%3a8+GB!!4!!||f_demo%3a16+GB!!5!!||||Category:Notebooks"

Thanks!

Where is code what you have tried to remove the desired string — black_pottery_beauty
– black_pottery_beauty, Commented Jul 19, 2016 at 5:47

Community · Accepted Answer · 2017-05-23 12:08:29Z

1

Use String#replace method with regex /f_test[^|]+\|\|/g(or /f_test.+?\|\|/g)

var myString = "?specs=f_demo%3a8+GB!!4!!||f_test%3a2+GB!!2!!||f_test%3a4+GB!!3!!||f_demo%3a8+GB!!4!!||f_demo%3a16+GB!!5!!||||Category:Notebooks";

console.log(
  myString.replace(/f_test[^|]+\|\|/g, '')
)

UPDATE : If test is loading from a string variable then generate regex using RegExp constructor.

var k = "test",
  myString = "?specs=f_demo%3a8+GB!!4!!||f_test%3a2+GB!!2!!||f_test%3a4+GB!!3!!||f_demo%3a8+GB!!4!!||f_demo%3a16+GB!!5!!||||Category:Notebooks";

console.log(
  myString.replace(RegExp('f_' + k + '[^|]+\\|\\|', 'g'), '')
)

Refer : Converting user input string to regular expression

edited May 23, 2017 at 12:08

CommunityBot

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answered Jul 19, 2016 at 5:48

Pranav C Balan

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2 Comments

Kalpesh Boghara Over a year ago

If i want like this then var myString = "?specs=f_demo%3a8+GB!!4!!||f_test%3a2+GB!!2!!||f_test%3a4+GB!!3!!||f_demo%3a8+GB!!4!!||f_demo%3a16+GB!!5!!||||Category:Notebooks"; var k="test"; myString= myString.replace(/f_@k[^|]+\|\|/g, '') What about k?

Pranav C Balan Over a year ago

@KalpeshBoghara : glad to help... :)

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