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What is the difference (if any) between a standard document object and an extjs object? I mean this:
Is there a difference between
<input type = "button">
and new Ext.Button()
Yes, there’s a difference. The HTML
<input>element creates a node in the document’s DOM tree, which is accessible in JavaScript using DOM methods. TheExt.Button()constructor creates an ordinary JavaScript object, not a DOM object, but it knows how to create the DOM object when ExtJS asks it to render itself.Basically, ExtJS components are wrappers around (possibly multiple) DOM objects, and have a higher-level API compared to working with the DOM tree directly.