replace last letter in string js code example

Example 1: how to remove lasr char from string in javascript

str=str.slice(0, -1);

Example 2: javascript remove last character from string

var str = 'mystring';

// the character 'g' will be removed
str = str.slice(0, -1);

let str = "12345.00";
str = str.slice(0, -1); 
console.log(str);