麻烦老师看下哪里错了，实在找不出

来源：4-13 html5默认气泡修改演示

xxxxxbilibli

2018-06-22 23:14:33

<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<style>
.oneline {
    line-height: 1.5;
    margin: 10px auto;
}

.oneline label {
    width: 100px;
    text-indent: 15px;
    font-size: 14px;
    font-family: "Microsoft Yahei";
    display: inline-block;
}

.oneline .sinput {
    width: 60%;
    height: 30px;
    border-radius: 6px;
    border: 1px solid #e2e2e2;
}

.oneline input[type="submit"] {
    margin-left: 20px;
    width: 80px;
    height: 30px;
    border: 0;
    background-color: #5899d0;
    color: #fff;
    font-size: 14px;
    border-radius: 6px;
}

.error-messages {
    color: red;
}
</style>

<body>
    <form id="forms">
        <div class="oneline">
            <label for="name">用户名:</label>
            <input id="name" class="sinput" name="name" type="text" required>
        </div>
        <div class="oneline">
            <label for="email">Email:</label>
            <input id="email" class="sinput" name="email" type="email" required>
        </div>
        <div class="oneline">
            <input type="submit" id="submits" value="提交">
        </div>
    </form>
    <script>
    function replaceValidationUI(form) {
        form.addEventListener("invalid", function(event) {
            event.preventDefault();
        }, true);
        form.addEventListener("submit", function(event) {
            if (!this.checkValidity()) {
                event.preventDefault();
            }
        },true);
        //此处写代码
        var submitBtn=document.getElementById("submits");
        submitBtn.addEventListener("click",function(){

         var invalidFields=form.querySelectorAll(":invalid"),
         errorMessages=form.querySelectorAll(".error-messages"),
         parent;

        for(var i=0;i<errorMessages.length;i++){
         errorMessages[i].parentNode.removeChild(errorMessages[i]);
        }

        for(var i=0;i<invalidFields.length;i++){
         parent=invalidFields[i].parentNode;
         parent.insertAdajcentHTML("beforeEnd","<div class='error-messages'>"+invalidFields[i].validationMessage+"</div>");
        }
        if (invalidFields.length > 0) {
            invalidFields[0].focus();
         }

})
        
     
    }
    var form = document.getElementById("forms");
    replaceValidationUI(form);
    </script>
</body>

</html>

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