js trim first char\ code example
Example 1: javascript remove first character from string
let str = " hello";
str = str.substring(1);
Example 2: javascript remove first character from string
let str = 's';
str = (function f(s) { // don't use on large strings
return s.length<=1?'':f(s.slice(0, -1))+s[s.length-1]
})(str); // ""