Having a placeholder in a Select option

This question already has an answer here:

How do I make a placeholder for a 'select' box? 19 answers

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I think this is what you want .

HTML:

<select id="choice">
  <option value="0" selected="selected">Choose...</option>
  <option value="1">Something</option>
  <option value="2">Something else</option>
  <option value="3">Another choice</option>
</select>

CSS :

#choice option { color: black; }
.empty { color: gray; }

JavaScript:

$("#choice").change(function () {
  if($(this).val() == "0") $(this).addClass("empty");
  else $(this).removeClass("empty")
});

$("#choice").change();

try this jsfiddle.

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不知道这是你在找什么

<select>
    <option value="" disabled selected>Select your option</option>
    <option value="value1">Value 1</option>
    <option value="value2">Value 2</option>
    <option value="value3">Value 3</option>
</select>

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