how to remove number from starting index in string javascript code example

Example 1: javascript remove first character from string

let str = " hello";
str = str.substring(1);

Example 2: trim first character in javascript

let str = 'Hello';
 
str = str.slice(1);
console.log(str);
 
/*
    Output: ello
*/

Example 3: remove character at index from string javascript

// removing char at index 3
var str = "Hello World";
str = str.slice(0, 3) + str.slice(4);

console.log(str)  // Helo World