how to remove the last character from a string in javascript

var str = 'mystring';

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

const text = 'abcdef'
const editedText = text.slice(0, -1) //'abcde'

var str = "Your string"
str = str.slice(0, -1); 
console.log(str)
//returns "Your strin"

var str = "Hello";
var newString = str.substring(0, str.length - 1); //newString = Hell

var str = "Hello TecAdmin!";
var newStr = str.slice(0, -1);

let str = "12345.00";
str = str.substring(0, str.length - 1);

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

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

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