Shim for placeholder support (My version)

placeholder-shim.js

/*jslint bitwise: true, eqeqeq: true, passfail: false, nomen: false, plusplus: false, undef: true, evil: true */
/*global window, document, $, jQuery, LBI, self, Modernizr, setTimeout, define, require */
define("utils/placeholder-shim", function () {
    var hasPlaceholder,
        placeHolderClass = 'showing-placeholder';

    function testForPlaceholder (){
        var i = document.createElement('input');
        return 'placeholder' in i;
    }

    function bindEvents (target, select) {
        var targetElements = target;

        if (select) {
            target
                .on('focus', select, onFocus)
                .on('blur', select, onBlur);

            targetElements = target.find(select);
        }
        else {
            target
                .on('focus', onFocus)
                .on('blur', onBlur);
        } 
        targetElements.each(function (i, elem) {
            onBlur.call(elem);
        });
    }

    /**
    * When focused, test if the value of the form field matches the placeholder value. If it does remove this value.
    */
    function onFocus (event) {
        var $element = $(this),
            placeholderValue = $element.attr('placeholder'),
            formValue = $element.val();

        if (formValue === placeholderValue) {
            $element.val('').removeClass(placeHolderClass);
        }
    }

    /**
    * When blurred, test if the value of the form field is empty. If iso reset to the placeholder value.
    */
    function onBlur (event) {
        var $element = $(this),
            placeholderValue = $element.attr('placeholder'),
            formValue = $element.val();

        if (formValue === '') {
            $element
                .val(placeholderValue)
                .addClass(placeHolderClass);
        }
    }

    function init (target, select) {
        //test for placeholder if this is the first call
        if (hasPlaceholder === undefined) {
            hasPlaceholder = testForPlaceholder();
        }
        if (hasPlaceholder === false) {
            bindEvents(target, select);
        }
        return hasPlaceholder;
    }

    return {
        init: init
    };
});