Input button target="_blank" isn't causing the link to load in a new window/tab

use formtarget="_blank" its working for me

<input type="button" onClick="parent.location='http://www.facebook.com/'" value="facebook" formtarget="_blank">

Browser compatibility: from caniuse.com
IE: 10+ | Edge: 12+ | Firefox: 4+ | Chrome: 15+ | Safari/iOS: 5.1+ | Android: 4+

you will need to do it like this...

<a type="button" href="http://www.facebook.com/" value="facebook" target="_blank" class="button"></a>

and add the basic css if you want it to look like a btn.. like this

    .button {
    width:100px;
    height:50px;
    -moz-box-shadow:inset 0 1px 0 0 #fff;
    -webkit-box-shadow:inset 0 1px 0 0 #fff;
    box-shadow:inset 0 1px 0 0 #fff;
    background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ffffff), color-stop(1, #d1d1d1) );
    background:-moz-linear-gradient( center top, #ffffff 5%, #d1d1d1 100% );
 filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#d1d1d1');
    background-color:#fff;
    -moz-border-radius:6px;
    -webkit-border-radius:6px;
    border-radius:6px;
    border:1px solid #dcdcdc;
    display:inline-block;
    color:#777;
    font-family:Helvetica;
    font-size:15px;
    font-weight:700;
    padding:6px 24px;
    text-decoration:none;
    text-shadow:1px 1px 0 #fff
}



  .button:hover {
    background:-webkit-gradient( linear, left top, left bottom, color-stop(0.05, #d1d1d1), color-stop(1, #ffffff) );
    background:-moz-linear-gradient( center top, #d1d1d1 5%, #ffffff 100% );
 filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#d1d1d1', endColorstr='#ffffff');
    background-color:#d1d1d1
}
.button:active {
    position:relative;
    top:1px
}

target works only with href tags..

The correct answer:

<form role="search" method="get" action="" target="_blank"></form>

Supported in all major browsers :)