There are several ways to trim a string in Javascript. Here are some examples of Trim Function by Regular Expression.
Trim Left
function trimLeft(str)
{
return str.replace(/^\s+/g, "");
}
Trim Right
function trimRight(str)
{
return str.replace(/\s+$/g, "");
}
Trim Both
function jsTrim(str)
{
return str.replace(/^\s+|\s+$/g, "");
}