IE10 The following versions perfectly support placeholder features

Directly on the code, you need to introduce Jquery

$ (function () {///The browser does not support placeholder if (! (') Placeholder ' in document.createelement (' Input '))} {$ (' [placeholder] '). each (function () {var $tag = $ (t His);   Current input var $copy = $tag. Clone ();            The copy of the current input $copy. CSS ("Color", "#999");            $copy. Val ($copy. attr (' placeholder ')); $copy. focus (function () {if (This.value = = $copy. attr (' placeholder ')) {this.value = "                    ;                This.style.color = ' #000 ';            }            });                    $copy. blur (function () {if (this.value== "") {this.value = $copy. attr (' placeholder ');                    $tag. Val ("");                This.style.color = ' #999 ';                } else {$tag. val (this.value);            }            });    $tag. Hide (). After ($copy. Show ());    Current input hidden, with placeholder function JS input display}); }});

IE10 The following versions perfectly support placeholder features