String Split Commas Spaces

JavaScript

var keywordString = " ford    tempo, with,,, sunroof,, ";

//remove all commas; remove preceeding and trailing spaces; replace spaces with comma

str1 = keywordString.replace(/,/g , '').replace(/^\s\s*/, '').replace(/\s\s*$/, '').replace(/[\s,]+/g, ',');


//add a comma at the end
str1 = str1 + ',';

console.log(str1);