N
let str = " hello";
str = str.substring(1);
N
var newStr = str.substring(1);
N
// this will replace the first occurrence of "www." and return "testwww.com"
"www.testwww.com".replace("www.", "");
// this will slice the first four characters and return "testwww.com"
"www.testwww.com".slice(4);
// this will replace the www. only if it is at the beginning
"www.testwww.com".replace(/^(www\.)/,"");
N
// Hey buddy, here are different implementation, choose your favourite !!
// best implementation
const removeChar = (str) => str.slice(1, -1);
// regex
function removeChar(str) {
return str.replace(/^.|.$/g, "");
}
// without slice
function removeChar(str) {
const array = str.split("");
let res = "";
for (let i = 1; i < array.length - 1; i++) res += array[i];
return res;
}
N
let str = 'ss';
str = new RegExp('^.(.*)').exec(str)[1]; // "s"