当在下拉菜单中选择一个选项时,它会显示来自mysql的数据,我需要它是可选的。所以我做了一个单选按钮,但我需要它在选择选项后出现,但它总是在那里。
让您的单选按钮div具有"radio_div"的id和您的select-"select_options",然后:
document.getElementById('select_options').addEventListener('change', function () {
document.getElementById('radio_div').style.display = 'block';
});
不确定我是否理解,但像这样的东西?
http://jsfiddle.net/zysrcndx/
HTML:
<select id="show">
<option value="no" selected="selected">not showing</option>
<option value="yes">showing</option>
</select>
<div id="radio" style="display: none;">
<input type="radio" name="radio" value="something">Something<br>
<input type="radio" name="radio" value="somethingelse">Something Else
</div>
JavaScript:
var dd = document.getElementById('show');
var r = document.getElementById('radio');
dd.addEventListener('change', function () {
if(dd.options[dd.selectedIndex].value == 'no') {
r.style.display = 'none';
} else {
r.style.display = 'block';
}
});