To remove part of a string in TypeScript, you can use the substring() method. This method is used to extract characters from a string between two specified positions and return the characters as a new string.
Here's an example:
let str:string = "Hello World!";
let removedStr:string = str.substring(0, 5); // removes the first 5 characters from the string
console.log(removedStr); // output: "Hello"
In this example, the substring() method is used to remove the first 5 characters from the string and return the remaining characters as a new string removedStr.
You can also use the slice() method to remove part of a string:
let str:string = "Hello World!";
let removedStr:string = str.slice(6); // removes the first 6 characters from the string
console.log(removedStr); // output: "World!"
In this example, the slice() method is used to remove the first 6 characters from the string str and return the remaining characters as a new string removedStr.