trim in jquery 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 from string

string.split(" ").join("")

Example 3: js remove space before string

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

Example 4: trim space in jquery

var str = "       Hello World!        ";
alert(str.trim());