Don’t Let A Spec Pick Your Button Type

Ever need to create a <button> of type button when you’re doing a little DOM scripting? Easy enough, right? It should go something like this:

var okButton = document.createElement('button');
okButton.type = 'button';

Nevertheless when you run this code in IE6, you get the super-informative “Communication error” message. It turns out that IE6 (for once) is following the standard. I don’t know what the W3C were thinking, but so sayeth the ECMAScript Language Binding (9 January 2003) spec about the type property of the HTMLButtonElement:

type
This read-only property is a String.

So, the common way to set the property of an HTML element is, according to the standard, right out? I mean, it’s not inconceivable that I would want to create a <button> on the fly with a type that is not the default.

Alas there is a workaround. Ironically, it employs the standard method of setting DOM Node‘s attribute value:

var okButton = document.createElement('button');
okButton.setAttribute('type', 'button');

Works like a charm! Even in IE6.

(I should note that Firefox 3 allows for writing to the button’s type property using the button.type notation. I didn’t test with other browsers to see whether they balk at the button.type notation, but Firefox 2/3, Opera 9.6, and Safari 3, along with IE6/7, are more than amenable to the setAttribute method.)