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calculating a mark
[2Replies]
- 27-Mar-2010 04:11 PM
- Forum: Using jQuery
I'm making a page that calculates a mark before I submit the data to the database. It involves 8 <select> pulldowns. Each time I add a number I'm trying to get this Jquery code to display a percentage. The first one works but when I add any subsequent mark the display div shows NaN.

Any help would be appreciated. Here is my Javascript.
1. $('select').change(function() {
2. var arr_mark = $('#arr_mark').val();
3. var head_mark = $('#head_mark').val();
4. var solo1_mark = $('#solo1_mark').val();
5. var solo2_mark = $('#solo2_mark').val();
6. var rhyth_mark = $('#rhyth_mark').val();
7. var overall_mark = $('#overall_mark').val();
8. var prep_mark = $('#prep_mark').val();
9. var out_of;
10. if($('#head_mark')=='NA'){
11. out_of = 45;
12. head_mark = 0;
13. }
14. else {
15. out_of = 50;
17. }
18. var mark = ((arr_mark+head_mark+solo1_mark+solo2_mark+rhyth_mark+overall_mark+prep_mark)/out_of)*100;
20. $('#display').html(mark+'%');
22. });

Using bind()
[3Replies]
- 02-Feb-2010 09:27 AM
- Forum: Using jQuery
Hi, I'm new to javascript and jquery. I was looking to use $(selector).bind() instead of using the ONCHANGE handler inline. Could some one help me out on how to use that in the following code.
2. <Script language="JavaScript">
4. function goto(form) { var index=form.select.selectedIndex
5. if (form.select.options[index].value != "0") {
6. location=form.select.options[index].value;}}
9. </script>
11. <div id="select_student">
12. <br />
13. <br />
14. <h2>Choose a Student:</h2>
15. <form id="student_select" method="post">
16. <select id="select" name="select" ONCHANGE="goto(this.form)" SIZE="1">
17. <option selected="selected">---Select a Student---</option>
18. <?php
20. foreach ($students as $s) {
22. echo ('<option name="student_choice" value="https://secure.freteleven.com/lesson/get_student_lesson/'.$s->userid.'">'.$s->first_name.' '.$s->last_name.'</option>');
24. }
25. ?>
27. </select>
28. </form>
30. <br />
31. <br />
33. </div>

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