在异常上暂停 SyntaxError: Element.querySelectorAll: '\' is not a valid selector

代码如下：

<form class="navbar-form navbar-left">
    <div class="form-group">
        <button class="search-btn" style="border-radius: 40px; margin-top: 6px; border: #ffffff00;
                                                                background-color: #46555f00;" data-placement="left">
            <span class="glyphicon glyphicon-search" style="font-size: 90%;"></span>
        </button>
        <div id="inpDiv" style="margin: -15% 20%;">
            <input type="text" class="form-control" placeholder="Search" onkeydown="entersearch()"
                style="background-color: #bfcbd9dc; display: none; float: left;">
        </div>
    </div>
    <script>
        var fom = document.getElementsByTagName("form")[0];
        var But = fom.getElementsByTagName("button")[0];
        var Inp = fom.getElementsByTagName("input")[0];
        var divInp = document.getElementById("inpDiv");
        But.onclick = function (e) {                  //点击出现
            Inp.style.display = "block";
            e.stopPropagation();         //阻止冒泡
        }
        // 点击空白消失
        document.onclick = function (e) {
            Inp.style.display = "none";
        }
        divInp.onclick = function (e) {
            e = e || event;
            stopFunc(e);
        }
        function stopFunc(e) {
            e.stopPropagation ? e.stopPropagation() : e.cancelBubble = true;
        }
    </script>
</form>

你的错误截图是jQuery文件上的 应该是你用错了方法什么的