Javascript Split Space Delimited String and Trim Extra Commas and Spaces

In ES6:

var temp = str.split(",").map((item)=>item.trim());

You will need a regular expression in both cases. You could split and join the string:

str = str.split(/[\s,]+/).join();

This splits on and consumes any consecutive white spaces and commas. Similarly, you could just match and replace these characters:

str = str.replace(/[\s,]+/g, ',');

For the trailing comma, just append one

str = .... + ',';

If you have preceding and trailing white spaces, you should remove those first.

Reference: .split, .replace, Regular Expressions

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