Javascript - Goto URL based on Drop Down Selections (continued!)

This is continued from here: Javascript / jQuery - Goto URL based on Drop Down Selections

Some great folks have given me some code examples, but I am having real trouble on where to insert the code in my example form.

Can someone le开发者_运维百科t me know where exactly the code provided in the previous question location should be added in a form to work properly?

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Somewhere in your JavaScript file you need to bind a function to the onsubmit event of your form, so it can do whatever you want.

If you are using jQuery do this:

$(function(){

  $('form').submit(function(e){

      window.location.href = $('#dd1').val() +
                             $('#dd2').val()+
                             $('#dd3').val();

      e.preventDefault();

    });
});

Check how it works here: http://jsfiddle.net/WDtGK/2/

added HTML for context

 <form>
      <select class="dropdown" id="dd1">
        <option>http://</option>
        <option>ftp://</option>
        <option>https://</option>
      </select>
      <select class="dropdown" id="dd2">
        <option>google</option>
        <option>yahoo</option>
        <option>bbc</option>
        <option>hotmail</option>
      </select>
      <select class="dropdown" id="dd3">
        <option>.com</option>
        <option>.net</option>
        <option>.co.uk</option>
      </select>
      <input type="submit" name="button" id="button" value="Go!">
  </form>

---

 <form>
  <select class="dropdown" id="dd1" style="margin-right:10px;width:130px">
    <option>http://</option>
    <option>ftp://</option>
    <option>https://</option>
  </select>
  <select class="dropdown" id="dd2" style="margin-right:10px;width:130px">
    <option>google</option>
    <option>yahoo</option>
    <option>bbc</option>
    <option>hotmail</option>
  </select>
  <select class="dropdown" id="dd3" style="width:130px;margin-right:20px">
    <option>.com</option>
    <option>.net</option>
    <option>.co.uk</option>
  </select>
  <button id="button" type="button">GO</button> <!-- notice this change -->
  </form>

In Javascript:

$(document).ready(function () {
      $("#button").click(function(){navigate();});
});

function navigate(){
window.location.href = $('#dd1').val() + $('#dd2').val() + $('#dd3').val();
}