Print Var in JsFiddle

Question

How would I print something to the result screen in JsFiddle from my JavaScript. I can\'t use document.write(), it doesn\'t allow it, neither print

Answer 1

Try:

document.getElementById('element').innerHTML = ...;

Fiddle: http://jsfiddle.net/HKhw8/

Answer 2

To be able to see output from console.log() in JSFiddle, go to External Resources on the left-side panel and add the following link for Firebug:

https://getfirebug.com/firebug-lite-debug.js

Answer 3

I have a template for this purpose; here is the code I use:

HTML

<pre id="output"></pre>

JavaScript

function out()
{
    var args = Array.prototype.slice.call(arguments, 0);
    document.getElementById('output').innerHTML += args.join(" ") + "\n";
}

Sample use (JavaScript)

out("Hello world!");
out("Your lottery numbers are:", Math.random(), 999, Math.PI);
out("Today is", new Date());

Answer 4

Might not do what you do, but you can type

console.log(string)

And it will print the string into the console of your browser. In chrome push CTRL + SHIFT + J to open the console.

Answer 5

Just to add something that might be useful to some folks....

If you add the debugger console as shown above, you can access the scope by executing this:

scope = angular.element(document.querySelector('[ng-controller=MyCtrl]')).scope();

I find inspecting the scope directly easier than console.log, alert(), etc.

Answer 6

If you're using JSfiddle, you can use this library: https://github.com/IonicaBizau/console.js

Add a rawgit of the lib to your jsfiddle resources: https://cdn.rawgit.com/IonicaBizau/console.js/0ee8fcc4ea802247c5a7a8e3c6530ede8ade308b/lib/console.min.js

Then you can just add this in the HTML:
<pre class="console"></pre>

Initialize the console in your JS:
ConsoleJS.init({selector: "pre.console"});

Usage Example: See it on jsfiddle

ConsoleJS.init({selector: "pre.console"});

let b;

console.log('hello world');
console.log([{'a':10,'b':44}]);
console.log(typeof [1,2,3,4]);
console.log(50 +67);
console.log(b);