Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations derfloh on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
javascript
- Thread starter techskool
- Start date
Best to catch the onSubmit event, check the make sure that field ends in '.jpg' and if it doesn't alert the user and cancel the submit by returning false. If it matches the do a form.submit.
You won't be able to limit thte file browser with JS, thats an OS function.
You won't be able to limit thte file browser with JS, thats an OS function.
How's this?
<html>
<head>
<script>
function checkFile(f){
v=f.fileField.value;
if(v.substring(v.lastIndexOf('.')).toLowerCase()!='.jpg'){
alert('Files must be .jpg');
return false;
}
return true;
}
</script>
<body>
<form onsubmit="return checkFile(this)">
<input type="file" name="fileField">
<input type="submit">
</form>
</body>
</html>
Adam
while(ignorance==true){perpetuate(violence,fear,hatred);life--};
<html>
<head>
<script>
function checkFile(f){
v=f.fileField.value;
if(v.substring(v.lastIndexOf('.')).toLowerCase()!='.jpg'){
alert('Files must be .jpg');
return false;
}
return true;
}
</script>
<body>
<form onsubmit="return checkFile(this)">
<input type="file" name="fileField">
<input type="submit">
</form>
</body>
</html>
Adam
while(ignorance==true){perpetuate(violence,fear,hatred);life--};
- Thread starter
- #4
Thanks guys
Im very new to Javascript, i usually use ASP
Ive tried to use your ideas in the current function that happens on submitt but im getting an error.
Whats wrong please:
----------------------------------------
function onSubmitForm() {
var formDOMObj = document.frmSend;
if (formDOMObj.attach1.value != "" )
if (formDOMObj.attach1.value =='.jpg')
return true;
else
alert('Files must be .jpg');
return false;
else
alert("Please press the browse button and pick a file."
;
return false;
-----------------
Thanks
Dave
}
Im very new to Javascript, i usually use ASP
Ive tried to use your ideas in the current function that happens on submitt but im getting an error.
Whats wrong please:
----------------------------------------
function onSubmitForm() {
var formDOMObj = document.frmSend;
if (formDOMObj.attach1.value != "" )
if (formDOMObj.attach1.value =='.jpg')
return true;
else
alert('Files must be .jpg');
return false;
else
alert("Please press the browse button and pick a file."
;return false;
-----------------
Thanks
Dave
}
- Thread starter
- #5
Please ignore my ignorance
i really should have known how to do this, all coding is similar
Im using:
-----------------
function onSubmitForm() {
var formDOMObj = document.frmSend;
var v=formDOMObj.attach1.value;
if (formDOMObj.attach1.value == ""
alert("Please press the browse button and pick a file."
else
if(v.substring(v.lastIndexOf('.')).toLowerCase()=='.jpg')
return true;
else
alert('Files must be .jpg');
return false;
return false;
}
--------------
Thanks for the advice
Dave
i really should have known how to do this, all coding is similar
Im using:
-----------------
function onSubmitForm() {
var formDOMObj = document.frmSend;
var v=formDOMObj.attach1.value;
if (formDOMObj.attach1.value == ""
alert("Please press the browse button and pick a file."
else
if(v.substring(v.lastIndexOf('.')).toLowerCase()=='.jpg')
return true;
else
alert('Files must be .jpg');
return false;
return false;
}
--------------
Thanks for the advice
Dave
theboyhope
IS-IT--Management
You're getting an error with that code? Or do you mean that you've fixed it?
If you're getting an error: what is it? If not: well done!
(NB -- not everyone has javascript enabled.)
If you're getting an error: what is it? If not: well done!
(NB -- not everyone has javascript enabled.)
- Thread starter
- #7
- Status
Similar threads
- Locked
- Question