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if (websocket.bufferedAmount < bufferThreshold) {
  websocket.send(message);
} 

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function onMessage(evt) {
  writeToScreen( evt.data );
}

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function onMessage(evt) {

  if (evt.data instanceof Blob) {
    // do something with evt.data
  } else {
    document.getElementById("textresponse").value = evt.data;
  }
};

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function onClose(evt) {
  writeToScreen("DISCONNECTED");
}

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<input type="email" id="orderEmail" name="myEmail" placeholder="email@contoso.com" required />

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<label for="price">Price</label>
<input id="price" type="text" title="0.00" pattern="\d+(\.\d{2})?" />

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<input type="range" name="anumberbetween1and10" min="1" max="10" />

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<input type= "text" list= "pacificstates" name= "State" id= "State" placeholder= "Pick a State" /> 
<datalist id= "pacificstates"> 
    <select>
        <option value= "California" /> 
        <option value= "Oregon" /> 
        <option value= "Washington" /> 
    </select>
</datalist>

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<label for= "zip">ZIP Code: </label><input type= "text" id= "zip" title="Five- or nine-digit zip code" 
pattern="^(\d{5}-\d{4}|\d{5}|\d{9})$" />

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<style>
input:required:invalid, input:focus:invalid
{
    background-image: url(/images/invalid.png);
    background-position: right top;
    background-repeat: no-repeat;
}
</style>