This question already has answers here:
Why isn't my JavaScript working in JSFiddle?
(7 answers)
Closed 3 months ago.
There is some code I wanted to put into JSFiddle. It didn’t work. Narrowing it down I can’t even get this simplest of code to work:
JSFiddle
function displaymessage() {
alert("Hello World!");
}
<form>
<input type="button" value="Click me!" onclick="displaymessage()" />
</form>
<p>By pressing the button above, a function will be called. The function will alert a message.</p>
The alert box doesn’t show up in the JSFiddle.
Select No wrap - bottom of <head> in the “Load type” dropdown in the JavaScript settings.
You need to take your function out of the onLoad/onReady otherwise it is placed inside of another scope and your button cannot access the function. In your case you need to use
No wrap (head)
The code generated looks like this:
Ext.onReady(function() {
function displaymessage()
{
alert("Hello World!");
}
});
Change the code to run "no wrap (head)" instead of "onDomReady". Your function isn't visible to your markup as is.
Maybe some of you need to move your function outside of document.ready if you use html onclick="func()"
$(document).ready(function() {
...
}
function func(){
...
}
If you still have problems, check whether you have
AdBlockers installed as a browser extension? (i.e. AdBlocker Plus)
Turn off AdBlockers in JSFiddle and run again.
I hope this helps some one.
Thanks.
Sorry but... is much simpler than what you propose...
If you want to call a js function with "onclick" attribute, put your javascrit code directly in head, you dont need domready or similars.
Second, you need to include "javascript:" before the function name.
See: http://jsfiddle.net/XNJxT/1838/
<input type="button" value="Click me!" onclick="javascript:displaymessage()" />
My problem to this was when I made my script tag I typed it out :
script type="javascript/text"
instead of :
script type="text/javascript"
and now it works.
http://jsfiddle.net/praveen_prasad/XNJxT/14/
Js fiddle so something like this to whatever you write
window.addEvent('load',function(){
//Your code
});
Related
Very simple minimal jsfiddle example:
https://jsfiddle.net/a9f2j4xo/
Clicking the button should invoke the Bla() function.
When I click the button the console says
ReferenceError: Bla is not defined.
Who or what is malfunctioning here, jsfiddle or my brain?
You need to wrap the function script inside <head> . Otherwise your script is not invoked.
Change the settings as
LOAD TYPE - Wrap in <Head>
WORKING DEMO
This seems to be something weird. Because on putting it inside script tag it is working. See js fiddle here https://jsfiddle.net/a9f2j4xo/
<button onclick='Bla()'>
Test
</button>
<script>
function Bla()
{
alert('yes');
}
</script>
I have this as my function, it's currently just a test.
<button onclick=function test()>Test The Function!</button>
<script>
function test(){
return('Try Again!')
}
</script>
According to the console whenever I call on the function, "expected expression, got end of script"
Are there any errors or am I doing this wrong? The function is in the head.
Edit: In response to the comments, this is my code after attempting to do what the comments said. Note: This does not work for me. I am using Firefox, and it is on the f12 editor on the about:blank page.
<html><head></head><body>
<script>
function test() {
alert("You clicked the button");
}
</script>
<button onclick="test()">Using Javascript</button>
</body></html>
Yes, I know this works in the snippet or fiddle, but it doesn't work in the html code in an about:blank page. Can anyone figure out the problem? I click the button and NOTHING happens.
You need to update your code to:
<button onclick="test()">Test The Function!</button>
You will also have to move the function definition before the call in the html, or else test will be undefined.
Few issues I see:
Wrap the function call in "
Create script above the template
Calling the function without the word function
Where do you expect to return in the function? If you want to see something in the console use console.log or if you want an alert use alert().
Not all of those are wrong but its best to struct them like that.
fiddle: https://jsfiddle.net/8x0avrv5/
Complete code:
<script>
function test(){
alert('Try Again!');
}
</script>
<button onclick="test()">Test The Function!</button>
To answer your question this is the correct syntax:
<button onclick="return click1()">
Using javascript
</button>
javascript
function click1() {
alert("You clicked the button");
return true;
}
As another option you can use Jquery instead
<button id="click">
Using jquery
</button>
Jquery
$("#click").click(function() {
alert("You clicked the button");
});
See examples here: https://jsfiddle.net/hzkwxo3q/2/
download
<script type="text/javascript">
function download() {
alert("hello");
}
</script>
When I click the link, I don't see an alert. Instead it says the function doesn't exist. Why?
When I rename download to downloadx, it still doesn't work, so it's not the name of my function that's a problem.
First of all as #gmo said your code will never work outside JSFiddle because of the name of the function.
Read More about it HERE (Can't use “download” as a function name in javascript)
From now on i'll use downloadx as the function's name
Instead another problem caused by JSFiddle makes your code non functioning even if you use downloadx.
simple-example-doesnt-work-on-jsfiddle
JSfiddle wrap your code inside a window.onload function, so the download function is outside of the scope.
//<![CDATA[
window.onload=function(){
function downloadx() {
alert("hello");
}
}//]]>
SOLUTION 1 JSFiddle
you should declare it directly on window
window.downloadx = function() {
alert("hello");
}
SOLUTION 2 JSFiddle
Select No wrap - in <head>
On the left column in JSFiddle
NB
In any case you should use another name for the function, this is the reason why it doesn't work outside JSFiddle.
I still think it's a duplicate question from here: Can't use "download" as a function name in javascript
And related exclusive on the function name in a tag.
...<a> elements have a download attribute in HTML5 as explained
here...
Maybe a workaround is possible, but definitely not recommendable to mess with browser native functions.
But.. if you still think that it's not.. please try this:
(no hacks needed)
function download() {
alert("hello");
}
function downloadx() {
alert("hello");
}
download <-- not working
<br />
downloadx <-- works
<br />
<span onClick="download();">download</span> <-- works
The last one use download as function name and also work, why?
Because it's not an <a> tag.
I have try this on jsfiddle,
here's the html :
<input onclick="masuk(10);" type="radio" name="myRadio1" value="Yes"/>1<br/>
<input onclick="alert(10);" type="radio" name="myRadio1" value="Yes"/>2<br/>
here's the js :
function masuk(a) {
alert(a);
}
here's the link : http://jsfiddle.net/codingsolver/MsYqx/
the point is, why if click the first radio button which call function masuk() it doesn't want to show the alert. But if I directly call the alert, it works. Does any one know why?? Thanks lots
It should work. Make sure you are loading javascript after the DOM has been loaded. Place javascript above </body>
Your jsFiddle is gone, but in order to call from HTML like that, your variable would have to be globally defined, which it probably isn't (but can't say for sure without the full source).
This question already has answers here:
Why isn't my JavaScript working in JSFiddle?
(7 answers)
Closed 3 months ago.
There is some code I wanted to put into JSFiddle. It didn’t work. Narrowing it down I can’t even get this simplest of code to work:
JSFiddle
function displaymessage() {
alert("Hello World!");
}
<form>
<input type="button" value="Click me!" onclick="displaymessage()" />
</form>
<p>By pressing the button above, a function will be called. The function will alert a message.</p>
The alert box doesn’t show up in the JSFiddle.
Select No wrap - bottom of <head> in the “Load type” dropdown in the JavaScript settings.
You need to take your function out of the onLoad/onReady otherwise it is placed inside of another scope and your button cannot access the function. In your case you need to use
No wrap (head)
The code generated looks like this:
Ext.onReady(function() {
function displaymessage()
{
alert("Hello World!");
}
});
Change the code to run "no wrap (head)" instead of "onDomReady". Your function isn't visible to your markup as is.
Maybe some of you need to move your function outside of document.ready if you use html onclick="func()"
$(document).ready(function() {
...
}
function func(){
...
}
If you still have problems, check whether you have
AdBlockers installed as a browser extension? (i.e. AdBlocker Plus)
Turn off AdBlockers in JSFiddle and run again.
I hope this helps some one.
Thanks.
Sorry but... is much simpler than what you propose...
If you want to call a js function with "onclick" attribute, put your javascrit code directly in head, you dont need domready or similars.
Second, you need to include "javascript:" before the function name.
See: http://jsfiddle.net/XNJxT/1838/
<input type="button" value="Click me!" onclick="javascript:displaymessage()" />
My problem to this was when I made my script tag I typed it out :
script type="javascript/text"
instead of :
script type="text/javascript"
and now it works.
http://jsfiddle.net/praveen_prasad/XNJxT/14/
Js fiddle so something like this to whatever you write
window.addEvent('load',function(){
//Your code
});