Question

我想从选项标签中获取＆＃39; id＆＃39; 的值....如何编辑功能。每次我运行它都会提供身份信息，但我想显示价格信息

如何修改response.setContentType("application/octet-stream"); response.setHeader("Content-Disposition","attachment;filename=abc.csv"); ServletOutputStream out = res.getOutputStream(); for (Order traverse : orderMap.values()) { out.write(traverse.toString().getBytes()); out.write("\n".getBytes()); out.flush(); }

这一行请建议我帮忙

var sel = document.getElementById('proID');

Answer 1

检查样本以选择所选选项的属性。

＆＃13;

$(document).on('change', '#proID', function(){
    var val = $('option:selected', this).attr('value');
    console.log(val);
})

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="proID" name="proID" >
          <option>Select Product</option>
          <option value="val11" id="1000">sample11</option>
          <option value="val22" id="2000">sample22</option>
</select>

＆＃13;

Answer 2

这是获取所选选项ID的id的纯JavaScript解决方案。

select = document.getElementById('proID');
var selectedOpt = select.options[select.selectedIndex];
alert(selectedOpt.id);

这是小提琴 https://jsfiddle.net/1n9u8782/1/

带有document.getElementById的PHP，用于选项标记中的值

2 个答案: