![JS数组[2, 5, 2, 5, 10, 12],如何循环打印 （2, 5, 10, 12） 不要打印重复的值，这个循环怎么写。](/aiimages/JS%E6%95%B0%E7%BB%84%5B2%2C+5%2C+2%2C+5%2C+10%2C+12%5D%2C%E5%A6%82%E4%BD%95%E5%BE%AA%E7%8E%AF%E6%89%93%E5%8D%B0+%EF%BC%882%2C+5%2C+10%2C+12%EF%BC%89+%E4%B8%8D%E8%A6%81%E6%89%93%E5%8D%B0%E9%87%8D%E5%A4%8D%E7%9A%84%E5%80%BC%EF%BC%8C%E8%BF%99%E4%B8%AA%E5%BE%AA%E7%8E%AF%E6%80%8E%E4%B9%88%E5%86%99%E3%80%82.png)
<option value="0">test</option>
<option value="1">test1</option>
<option value="2">test2</option>
</select>
<input type="input" value="输入框" id="my_input"/>
</body>
<script type="text/javascript">
function show_input(test_value){
if(test_value==0){
document.getElementById("my_input").style.display="block"
}else{
document.getElementById("my_input").style.display="none"
}
}
</script>
![jsp接收到的byte[]类型怎么转为png图片显示在页面上？](/aiimages/jsp%E6%8E%A5%E6%94%B6%E5%88%B0%E7%9A%84byte%5B%5D%E7%B1%BB%E5%9E%8B%E6%80%8E%E4%B9%88%E8%BD%AC%E4%B8%BApng%E5%9B%BE%E7%89%87%E6%98%BE%E7%A4%BA%E5%9C%A8%E9%A1%B5%E9%9D%A2%E4%B8%8A%EF%BC%9F.png)
