remove last char from string javascript

1var str = 'mystring';
2
3// the character 'g' will be removed
4str = str.slice(0, -1);

1let str = "Hello Worlds";
2str = str.slice(0, -1);

1const text = 'abcdef'
2const editedText = text.slice(0, -1) //'abcde'
3

1var str = "Your string"
2str = str.slice(0, -1); 
3console.log(str)
4//returns "Your strin"

1var str = "Hello";
2var newString = str.substring(0, str.length - 1); //newString = Hell

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