Create UI Component in HTML, CSS, and JS like it is in Adobe Flex & ActionScript

create-ui-js.js

function function LoginControl() {
    this.loginData = { username:'', password:'' };
    this.name = '';
    this.loginUI = $('<div class="login-ui"> \
                        <form name="loginForm" class="login-form"> \
                        <div class="form-fields"> \
                             <label class="title"> User Login </label> \
                            <div class="form-field"> \
                            <input type="text" class="input-text username" name="username" placeholder="User ID"/> \
                            </div> \
                            <div class="form-field"> \
                                <input type="password" class="input-text" name="password" placeholder="Password"/> \
                            </div> \
                            <input class="btn submit" type="submit" value="Login to your account"/> \
                         </div> \
                         </form> \
                     </div>');
}