javascript remove the last character of a string

var str = "Your string"
str = str.slice(0, -1); 
console.log(str)
//returns "Your strin"let str = "12345.00";
str = str.substring(0, str.length - 1);
str=str.slice(0, -1);"somestring0".slice(0, -1)
// "somestring"let str = "12345.00";
str = str.substring(0, str.length - 1);
console.log(str);let str = "12345.00";
str = str.substring(0, str.length - 1);
console.log(str);