tryjsref_button_disabled 在线代码实例

 <form>
Buttons:
<input type="button" id="firstbtn" value="OK">
<input type="button" id="secondbtn" value="OK">
</form>

<p>Click the button below to disable the first button above.</p>

<button onclick="disableElement()">Disable button</button>

<script>

function disableElement()
{
document.getElementById("firstbtn").disabled=true;
}

</script>