JavaScript usuń pierwszy znak w ciągu
var oldStr ="Hello";
var newStr = oldStr.substring(1); //remove first character "ello"
Grepper
var oldStr ="Hello";
var newStr = oldStr.substring(1); //remove first character "ello"
// 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\.)/,"");function removeCharsFromStart(str, charCount){
str = str.slice(charCount);
return str;
}