ASP.NET MVC Client Validation

<script src="jquery-1.4.4.min.js" type="text/javascript"></script>
<script src="jquery.validate.min.js" type="text/javascript"></script>
<script src="jquery.validate.unobtrusive.min.js" type="text/javascript"></script>

Global Settings
<appSettings>
<add key="ClientValidationEnabled" value="true"/>
<add key="UnobtrusiveJavascriptEnabled" value="true"/>
</appSettings>


Page-level Settings
@Html.EnableClientValidation(false/true)
@Html.EnableUnobtrusiveJavascript(false/true)


Unobtrusive Javascript Validation
<input id="ConfirmHours" name="ConfirmHours" type="text value="0" class="text-box-single-line"
data-val="true"
data-val-equalto="ConfirmHours and Hours do not match."
data-val-equalto-other="*.Hours"
data-val-number="The field ConfirmHours must be a number."
data-val-range="The field ConfirmHours must be between 1 and 120."
data-val-range-max="120"
data-val-range-min="1"
data-val-required="The ConfirmHours field is required."
/>
<span class="field-validation-valid" data-valmsg-for="ConfirmHours" data-valmsg-replace="true"/>