Use HTML dropdown list values with JavaScript -


this i'm trying do:

the user selects either option "one" or option "two". if user select "one" result 66 + 45 or if user select "two" result 35 + 45.

how can implement using html , javascript?

this i've done far:

html:

<select id="number">   <option>one</option>   <option>two</option> </select>  ...  // result <div id="result"></div>

javascript:

function test(eventinfo) {    var userselection = document.getelementbyid("number").value;    if () {     result = 66 + 45;   } else {     result = 35 + 45;   }    var greetingstring = userselection;   document.getelementbyid("result").innertext = greetingstring;  }

consider:

<select id="number">   <option value="66">one</option>   <option value="35">two</option> </select>

then:

result = 45 + +document.getelementbyid("number").value;

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