1st JavaScript Editor is an advanced JavaScript editor, validator and debugger for beginners and professionals. Besides rich possibilities of editing scripts (JavaScript, HTML, CSS, VBScript, PHP and ASP syntax highlighting, etc) the program offers a large snippets library with a full collection of DHTML and JavaScript tags, attributes, and statements (in total over 1200,) allowing you to insert them into web page by click. It offers built-in JavaScript debugger which allows you run and debug JavaScript code one line at a time, and each time, either adding extra code on the fly or checking how variables change in the run of the program. Ajax developers can easily use the program as advanced Ajax Editor. It is used for professionally editing JavaScript code and creating animations and other special effects for Web pages using DHTML, CSS and JavaScript.