javascript - Make dropdown multi-select -

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I have 2 dropdowns and one of them (the second one) is dynamic in such a way that its value changes according to the option Selected in first dropdown

JSFiddle Result:

Can anyone show me how can I make another dropdown to select each other? I'm really green in Jquery and HTML.

JSFild: 

  & lt; Select ID = "range_oder_cite" & gt; & Lt; / Select & gt; & Lt; Select ID = "auswahl" & gt; & Lt; / Select & gt; Var data = {"category": ["craft", "starship", "insurance", "risk",], "site": ["http://jsfiddle.net/tony089/pgbw56vb/2/", " Https://stackoverflow.com/users/login?returnurl=%2fquestions%2fask "],}; Var $ kategorien = $ ("# kategorie_oder_seite") ("Change", function () {var seiten = $ .map (data [this.value], function (seite) {return $ ("& lt; option / & gt;"). Text (seat);}) ; $ ("# Auswahl") blank (). Append (sitten);}); (Different categories in data) {$ ("& lt; option />").text(kategorie).appendTo($kategorien); } $ Kategorien.change ();

Thanks in advance.

You can select multiple of the selection tag attribute and its value to multiple Also remember that the name set the asset to an array so that you can send multiple values ​​through this select control. E.g. 

  & lt; Multiple = "multiple" id = "category_oder_seite" name = "check []" & gt; & Lt; / Select & gt;

JSField:


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