JS Bin is a free online HTML, CSS, and Javascript editor. It has live output so you may see what you are doing. .
JS Bin is a collaborative open source JavaScript debugging tool. Enter Javascript in one pane and HTML in the other and see the result; share using a short URL. Choose popular JS libs from a menu, so you don't have to remember the URL.
It's like pastebin (or codepad) for JavaScript, HTML and CSS.
Premium features include Vanity URLs, Email support, Dropbox sync, private bins, etc.
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