How To Convert string to number in Angular

In Angular, there are several ways to convert a string to a number. Here are a few options:

1. Using the Number constructor:

let num = new Number('123');

2. Using the parseInt function:

let num = parseInt('123');

3. Using the parseFloat function:

let num = parseFloat('123.45');

4. Using the + operator:

let num = +'123';

It’s important to note that these methods will only work if the string represents a valid number. If the string is not a valid number, you will get NaN (Not a Number) as the result.

You can check if the result is NaN using the isNaN function:

if (isNaN(num)) {
  // num is not a number
}

You can also use the Number function to handle the conversion and check for NaN at the same time:

let num = Number('123');
if (isNaN(num)) {
  // num is not a number
}

It’s also worth noting that the parseInt and parseFloat functions have an optional radix parameter that specifies the base of the number in the string. For example, if the string is a hexadecimal number, you can use parseInt with a radix of 16:

let num = parseInt('FF', 16); // num is 255

I hope this helps! Let me know if you have any questions.