I have a situation where I’m trying to join the array of strings only if it has a value. I did using let variable, but I wonder can I do this using map. I’m very mindful on the position, so I used in this way. Will I be able to do this using map, filter and join? Answer If you
Tag: string
Store large amount of data in Javascript
Im receiving some file chunks in bytes format from my server and im collecting them into one variable in my frontend to download it later. And I can’t change my server conception (receiving a file sliced into chunks). My problem is that if the file is heavy (from 500MB), my variable length is starting t…
Find and detect a pattern in a string
I’m looking for a function that detects repeated patterns on a string, for example, if the input is: it should return true as there are many times repeated “Hello” or “Hello this is a repeated pattern” I have tried something like this: but that will only detect if the text contai…
how do I create a string with an escaped open parens?
consider the following So, how do I set s to ‘(‘? Answer You don’t. You’re confused about the value of a string and its representation (whence Python repr() function). A parenthesis is not a special character in a JavaScript string, so it will never be escaped in its canonical “c…
Why doesn’t this function change the case of the string when it has a similar character like the first letter?
Can’t understand why the following function works for some strings an didn’t work for some which has a similar character like the first. Answer The function String.prototype.replace replaces the first occurrence when the first argument is a string. You can split the string change the index to uppe…
Replace single quote ( ‘ ) from each record in list JS
so I have a list like this: And I want to look like this: My problem is, I try every way i know to replace the single quote but, nothing work, so far so god, I got this code: But I still getting the same result, any idea of how can i do it? Thank you very much to all!
Extract and replace dynamic placeholders in javascript string
I need to understand and find a way to replace the occurences of placeholders in a string. I’m working on an app for the Magic, The Gathering tcg game. The text of the card contains a description and some symbols Let me explain better with an example: Some possible strings are “{W}{B}, {T}: Preven…
why doesn’t this work? it’s a simple console log inside a loop [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 9 months ago. Improve this question the …
Is there a one-liner to concatenate the key and values of a dict of unknown size into a string in JS?
I am trying to parse a dictionary into a string in one line as elegantly as possible. The string could have anywhere from 1 key value pair to 10. The dictionary I have: And I am trying to parse it into a query string converting it into: I know that using Object.keys and forEach i can traverse the Dict but
(javascript) If you had a string that was a word with a number at the end. How would you add a space between the word and the number?
For example: The word can be random and the number is always at the end. Answer Ian’s answer works for most integers, but for decimals or numbers with commas (like 1,000,000), you’ll want an expression like so it doesn’t put an extra space when it runs into a decimal point or comma. Writing …