calculation function

[Dormilich]

there are still typing mistakes...

function calculate() [b]{[/b]   // line 2
for ([b]var[/b] i = 0; i < cams.length; i++) {   // line 16
document.getElementsByName("grade")[b][0][/b].value = grade;   // line 71

[acoder]

No, document.getEle mentByName("cam ") returns an array of elements, so something like:
[code=javascript]var cams = document.getEle mentByName("cam ");
var finals = document.getEle mentByName("fin al_exam");
var total = 0;
for (i = 0; i < cams.length; i++) {
var total += parseInt(cams[i].value) + parseInt(finals[i].value);
}
document.getEle mentByName("tot al").value = total;[/code]

Gah! What a mess. Serves me right for just copying/modifying code without checking and testing. The last line should be using document.getEle mentById() too.

[azura]

i'm sory sir...

actually all the record are from my database.... that's why i use repeat region.. once admin find record by search all the data that require display.. but cam,final,are marks to be insert by admin..once admin key in the marks, total and gred will display then the admin save into the database....

[acoder]

Have you made the corrections as suggested by Dormilich above?

[azura]

yup.... i also had some new coding it's work..but the value had been set..how to retrive data from database? let say if had 30 data in database?

[Dormilich]

You can't do that with javascript alone. You need a server side script language, that can query the database for you. Once you got that working, you can retrieve those data with ajax.

regards

[azura]

must do the ajax also??....can you point me to any source that i can learn about retrieve many data using ajax?? thanks

[Dormilich]

must do the ajax also??

No. if you query the database before you send the html you certainly don't need ajax. ajax is needed, if you wan't things done 'on the fly' (after page load). but ajax is able to import data directly into javascript.

Well, all that depends also on what data you pull from the database and what you want to do with it (I couldn't figure that one out, sorry)

regards