To check if a string starts with a number in Node.js, you can use a regular expression.
Here's an example code snippet that checks if a string starts with a number:
const myString = "5abc"; const startsWithNumber = /^\d/.test(myString); console.log(startsWithNumber); // true
In the code above, we first define a string `myString` that starts with the number 5. We then create a regular expression `/^\d/` that matches any string that starts with a digit (`\d`).
The `test()` method of the regular expression object is then used to test if `myString` starts with a number. This method returns a boolean value indicating whether the string matches the regular expression or not.
The result is then logged to the console, which should output `true` since `myString` starts with a number.