JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://lcoawebservices.com/assets/ckeditor/ckeditor.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.10.0/jquery.validate.min.js"></script>
<link rel="stylesheet" href="http://lcoawebservices.com/assets/lcoastyles.css">
<form action="../../scripts/upload-job.php" method="post" id="add-job" class="form-all">
    <p class="req">All Fields are Required</p>

    <label>Description</label>
    <textarea name="desc" class="required" id="desc"></textarea>
    <script>
        CKEDITOR.replace('desc');
    </script>
    <br />
    <input name="submit" type="button" value="Submit Job" class="button" id="job-submit" />
    <input name="clear" type="reset" value="Clear Form" class="button" />
</form>

CSS

html, body {
    width: 100%;
}
form {
    margin: 10px 0 0 0;
}
#job-upload-content h2 {
    font-size: 13px;
    font-weight: bold;
}
#header {
    text-align: left;
    padding: 0;
    margin: 0 auto;
    position: relative;
    height: 55px;
    width: 980px;
}
#job-upload-content {
    width: 980px;
    margin: 0 auto;
    text-align: left;
}
form#add-job {
    width: 500px;
}
span#remove, span#add {
    cursor: pointer;
    color: #ff6633;
    text-decoration: underline;
}
#remove-job {
    display: none;
}
p.req, label.error {
    font-size: 10px;
    color: red;
    font-style: italic;
}
input.error, select.error {
    border: 1px solid red;
}
#add-job input, #add-job select {
    display: inline-block;
    margin: 0 10px 20px 0 !important;
}
.error {
    display: inline-block;
    vertical-align: top;
}
select, select.error {
    margin: 0 10px 10px 0 !important;
}

JavaScript

$(document).ready(function () {
     var FormAllClass = '.form-all'; 
        
        var IsValid = function () {
          $(FormAllClass).validate();
          $('#desc').rules("add", {
              required: true,
              messages: {
                  required: "Description is required."
              }
          });

          $(FormAllClass).valid();
    };
    
    //IsValid() //Working 
    
    
    $('#job-submit').on('click', function(){

    		if (IsValid())//not working
        {
        
        }
    })
});