"JavaScript" allows IE8 to use placeholder

    var placeholder=function ($element) {var $ = window.jquery;        var version = parsefloat ($.browser.version);        var isIE8 = $.browser.msie && version < 9; var text = $element. attr ("Cm-placeholder") | |        $element. attr ("placeholder");            if (isIE8) {var $placeholderContainer = $element. Closest ("Div");            $placeholderContainer. css ({"position": "relative"}); Window.settimeout (function () {var getfakeplaceholder = function () {var cmplaceholder                    Id = $element. attr ("Cm-placeholder-id");                    var $fakePlaceholder; if (Cmplaceholderid && cmplaceholderid.length > 0) {$fakePlaceholder = $placeholderCont                        Ainer.find ("#" + Cmplaceholderid);                        if ($fakePlaceholder && $fakePlaceholder. length > 0) {return $fakePlaceholder;       }                    }             var cm_placeholder_id = _.uniqueid ("cm-placeholder-");                    var fakeplaceholder = ' <span id= ' + cm_placeholder_id + ' "class=" Cm-placeholder "> ' + text + ' </span> ';                    $fakePlaceholder = $ (fakeplaceholder);                    $placeholderContainer. Append ($fakePlaceholder);                        $fakePlaceholder. On ("click", Function (e) {e.stoppropagation ();                    $element. focus ();                    });                    $element. On (' Focus ', function () {$fakePlaceholder. Hide ();                    }). On (' Blur ', function () {showfakeplaceholderifnotext ();                    });                    $element. attr ("Cm-placeholder-id", cm_placeholder_id);                return $fakePlaceholder;                };                var $fakePlaceholder = Getfakeplaceholder ();                var showfakeplaceholderifnotext = function () {    if ($element. val () = = = ") {var EP = $element. Position (); var top = Ep.top;                        -Wp.top; var left = Ep.left;                        -Wp.left;                        var height = $element. Height ()-2;                            $fakePlaceholder. css ({' top ': Top + ' px ', ' left ': Left + ' px ',                        "Height": Height + "px", "line-height": Height + "px"                        });                    $fakePlaceholder. Show ();                    } else {$fakePlaceholder. Hide ();                }                };            Showfakeplaceholderifnotext ();        }, 0); } else {$element. attr ("placeholder", text | |        ""); }    }

　　

"JavaScript" allows IE8 to use placeholder