[Javascript] Re: Using Javascript Indexof (Alan Easton)

[Alberto .·. Vallini]

This is not very clear, you should post also the
concerned HTML (not all the page! Just the form tag
and the two concerned fields): it is not said HOW you
call in isReady() which is surely the problem: you
have probably set up an infinite loop of functions
calling each others upon the event, without realizing
that loop between functions; but I can't truly guess
without the HTML you see.
Also, close the striong quote in the exptression

alert('Your Image Filename contains INVALID
characters);

See, the closing apex is missing: correct is:

alert('Your Image Filename contains INVALID
characters');/*added the last ' */

ciao
Alberto
http://www.unitedscripters.com/

> 
> Hi Everyone,
> 
> I am using the following piece of code to ensure a
> image filename does not
> include the "&" character......
> 
> <script language="javascript">
> function makefile() {
> document.form_save.myfile.value =
> document.form_save.FILE1.value;
> }
> 
> function isReady(form) { 
> mypic = document.form_save.myfile.value;
> if(mypic.indexOf('&') == -1){
> alert('Your Image Filename contains INVALID
> characters);
> form.FILE1.focus();
> return false;
> }
> }
> </script>
> 
> On the actual FILE1 form field, I run an OnChange
> function that copies what
> file has been selected(see above makefile()
> function) into another form
> field called "myfile", it is this field that is then
> queried using Indexof.
> 
> Unfortunately, the alert box pops up all the time,
> no matter what characters
> are in the filename.
> 
> Has any one any ideas why it would do this or am I
> not using Indexof
> correctly.
> 
> Many Thanks for any help,
> 
> Alan...
> 
> ------------------------------
> 
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> 
> 
> End of Javascript Digest, Vol 9, Issue 8
> ****************************************


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