placeholder is not working in IE9

Question

I am salesforce (SFDC) developer. In my visualforce page for input box I am using placeholder code.

Answer 1

A little simpler answer worked for me not being very trusting of Regex (my downfall)

function setPlaceHolderForIE9() {
    var pos = window.navigator.userAgent.indexOf("MSIE");

    if (pos > 0) {
        if (window.navigator.userAgent.substring(pos + 5, window.navigator.userAgent.indexOf(".", pos)) < 10) {
            //alert($("input[placeholder]").val($("input[placeholder]").attr("placeholder")));
            $("input[placeholder]").each(function () {
                $(this).val($(this).attr("placeholder"));
            });

            $("input[placeholder]").click(function () {
                if ($(this).val() === $(this).attr("placeholder")) {
                    $(this).val('');
                }
            });

            $('input[placeholder]').blur(function () {

                if ($.trim($(this).val()).length === 0) {
                    $(this).val($(this).attr("placeholder"));
                }
            });


        }
    }
}