Strings in JS are slightly similar to Python . In both cases they are immutable and even though it supports [] element access, there is no way to change existing string.
Key similarities:
- You can concatenate using ’+’
- You can concatenate string in quote with a variable containing string using ’+’
- ‘text’ and “text” essentially same and interchangeable
- Backticks also work to declare string. Or rather define a template literal for string formatting
Slicing
There is an in-built method for slicing strings. The method uses dot operator .slice() on string variables. The parameters passed behave similar to range in Python. The first param is the starting index, and the last param is the index where it stops (non inclusive).
let x = "myName"
x.slice(0) // returns "myName" because if end not mentioned, goes till it ends
x.slice(-1) // returns "e"
x.slice(0:4) // returns "myNa"Check Square Brackets to see how they behave in different iterables.
Other Methods
The method .toUpperCase() turns the string into upper case. Example use case - ALERTS, first letter capitalization, etc.
The method .toLowerCase() turns string into lower case. Example use case - data consistency for processing.