How do you dynamically create a radio button in Javascript that works in all browsers?

Question

Dynamically creating a radio button using eg

var radioInput = document.createElement(\'input\');
radioInput.setAttribute(\'type\', \'radio\');
radioInput.se         


        

Answer 1

Here's an example of more general solution which detects IE up front and handles other attributes IE also has problems with, extracted from DOMBuilder:

var createElement = (function()
{
    // Detect IE using conditional compilation
    if (/*@cc_on @*//*@if (@_win32)!/*@end @*/false)
    {
        // Translations for attribute names which IE would otherwise choke on
        var attrTranslations =
        {
            "class": "className",
            "for": "htmlFor"
        };

        var setAttribute = function(element, attr, value)
        {
            if (attrTranslations.hasOwnProperty(attr))
            {
                element[attrTranslations[attr]] = value;
            }
            else if (attr == "style")
            {
                element.style.cssText = value;
            }
            else
            {
                element.setAttribute(attr, value);
            }
        };

        return function(tagName, attributes)
        {
            attributes = attributes || {};

            // See http://channel9.msdn.com/Wiki/InternetExplorerProgrammingBugs
            if (attributes.hasOwnProperty("name") ||
                attributes.hasOwnProperty("checked") ||
                attributes.hasOwnProperty("multiple"))
            {
                var tagParts = ["<" + tagName];
                if (attributes.hasOwnProperty("name"))
                {
                    tagParts[tagParts.length] =
                        ' name="' + attributes.name + '"';
                    delete attributes.name;
                }
                if (attributes.hasOwnProperty("checked") &&
                    "" + attributes.checked == "true")
                {
                    tagParts[tagParts.length] = " checked";
                    delete attributes.checked;
                }
                if (attributes.hasOwnProperty("multiple") &&
                    "" + attributes.multiple == "true")
                {
                    tagParts[tagParts.length] = " multiple";
                    delete attributes.multiple;
                }
                tagParts[tagParts.length] = ">";

                var element =
                    document.createElement(tagParts.join(""));
            }
            else
            {
                var element = document.createElement(tagName);
            }

            for (var attr in attributes)
            {
                if (attributes.hasOwnProperty(attr))
                {
                    setAttribute(element, attr, attributes[attr]);
                }
            }

            return element;
        };
    }
    // All other browsers
    else
    {
        return function(tagName, attributes)
        {
            attributes = attributes || {};
            var element = document.createElement(tagName);
            for (var attr in attributes)
            {
                if (attributes.hasOwnProperty(attr))
                {
                    element.setAttribute(attr, attributes[attr]);
                }
            }
            return element;
        };
    }
})();

// Usage
var rb = createElement("input", {type: "radio", checked: true});

The full DOMBuilder version also handles event listener registration and specification of child nodes.