trim in java script

function LTrim( value ) {

var re = /\s*((\S+\s*)*)/;
return value.replace(re, "$1");

}

// Removes ending whitespaces
function RTrim( value ) {

var re = /((\s*\S+)*)\s*/;
return value.replace(re, "$1");

}

// Removes leading and ending whitespaces
function trim( value ) {

return LTrim(RTrim(value));

}