JavaScript Shell
JavaScript Shell A command-line interface for JavaScript and DOM. Open the shell or get the Shell bookmarklet (Firefox only). Features You can enter statements and expressions at the same prompt. The result of each non-void statement or expression is shown. User-defined variables. b = document.body User-defined functions. function f() { return 5; } JavaScript error messages are shown in red. Previ
Web Development Bookmarklets
These bookmarklets let you see how a web page is coded without digging through the source, debug problems in web pages quickly, and experiment with CSS or JS without editing the actual page. (To keep bookmarklets in order to use them on other web pages, drag them to your Bookmarks Toolbar. Or, install them all at once.)
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