white space remove in javascript code example

Example 1: javascript remove all whitespaces

var spacesString= "Do I have spaces?"; 
var noSpacesString= myString.replace(/ /g,'');// "DoIhavespaces?"

Example 2: js remove space before string

var str = "  Some text ";
str.trim();
// str = "Some text"

Example 3: javascript trim

var str=" I have outer spaces ";
var cleanStr=str.trim();//trim() returns string with outer spaces removed