HTML Code
Taken from /Partial/TextBox.html
        
<style type="text/css">
    .lastname-placeholder {
        font-style: italic;
        color: orange !important;
    }
    .lastname-textbox {
        width: 400px;
    }
    .lastname-input {
        font-weight: bold;
    }
</style>

<input id="firstname" /><br />
<br />
<input id="lastname" class="lastname-input" />
        
    
JavaScript Code
Taken from /Scripts/KendoUiExt.TextBox.js
        
$("#firstname").kendoExtTextBox({
    width: "200px",
    placeholder: "Enter first name..."
});

$("#lastname").kendoExtTextBox({
    textboxClass: "lastname-textbox",
    placeholder: "Enter last name...",
    placeholderClass: "lastname-placeholder"
});