string – JavaScript

REGEX – Match a pattern in a lengthy string

I am trying to match a particular pattern in a lengthy string: NEW ZEALAND AND (data.operator1:”SHELL AND AMP” AND data.field:”NEW ZEALAND”) OR (data.operator:purpose AND data….

How to identify a pattern in a string in nodejs

I have the following problem that I have not been able to solve for several hours: What I want to do is that when I receive a string, identify a pattern in said string and be able to use it later, for …

JS get string from blob

I have a function async function create_blob(image) { const blob = new Blob([image]) return await blob.text() } And I want it to return a string. When I try to use this data blob_hidden_input….

CodeSignal reverseParentheses Failing one case

Write a function that reverses characters in (possibly nested) parentheses in the input string. Input strings will always be well-formed with matching ()s. For inputString = “(bar)”, the …

Incrementing specific numbers contained within a string

I’m working with strings that look like this: “do3mi3so3 la3 ti4 do5 re5 mi5 /2 x2 fa4” I’d like to increment each number in the string past a specific point exempting numbers next to ‘/’ …

Javascript arrays email substring into full name, firstname and lastname

I know my questions are similar to other questions but I could not figure it. I am practicing javascript. I have arrays of emails. from that email I want to get three out puts of strings fullname, …

How to replace string using regex in javascript?

How to check a string and replace the space into “_” ? let str = “hello @%123abc456:nokibul amin mezba jomadder% @%123abc456:nokibul% @%123abc456:nokibul amin mezba%” str = str….

Check if String Contains a Substring With “Catch All” Items

I’m looking to make a javascript function that can identify when a string contains a substring with a “catch all” item. Example: const contains = (string, substring) => … let string1 = …

How to handle empty value in React form fields?

Below code is taken from reactjs.org, my question is how to handle the empty value in the below code. Alert should trigger only when there is some input from the user, it should not trigger if the …