JSFiddle.net我正确使用了吗？

Question

I put this code in the JavaScript box on www.jsfiddle.net and hit "run," but nothing happened. It works fine when I test it in Firebug, so why not jsfiddle.net Am I using jsfiddle.net incorrectly?

String.prototype.reverse = function() {
return Array.prototype.reverse.apply(this.split('')).join('');
}

"box".reverse();

Here I'm trying to save a fiddle. I click run and it doesn't work.

http://jsfiddle.net/mjmitche/qnjP3/

Answer 1

Well, try alert("box".reverse()) ; Your code did work, there was nothing to show it. See this fiddle

Answer 2

Works fine for me : http://jsfiddle.net/jomanlk/Vp5SF/

You probably didn't put an alert around your string. Since right now your method only returns the string so you don't have any indication that anything is happening.

Answer 3

Well, you have to create some output, don't you?

jsfiddle is not a JavaScript console. Either append the output do the DOM or print it to the browser's console.

jsfiddle lets you create a website with HTML, JavaScript and CSS on the fly, but nothing more. If you put your code above in a basic HTML file and open it with your browser, you would not see any output either.

It might be helpful to read the documentation .

Answer 4

Being a bit green with JS, I had the same notion about JSFiddle ...

Here's a tool that suits a bit better for that IMO ... jsbin.com (I took the liberty of putting your code in the above example).

The benefit is that you can use console in jsbin :).