javascript trim to string between quantity 1 code example

Example 1: javascript get text between two words

//Gets the part of the string inbetween the : and the ;
var part = str.substring(
    str.lastIndexOf(":") + 1, 
    str.lastIndexOf(";")
);

Example 2: cut string from string javascript

var ret = "data-123".replace('data-','');
console.log(ret);   //prints: 123