我知道这个问题的一部分已经被问过,我按照它的答案但是它仍然不起作用(添加的html元素没有显示),你能帮帮我吗? 我希望标签和条目仅在选择下拉菜单选项时显示
这是html部分:
<select id="dropDown">
<option value='1'>Doesn't repeat</option>
<option value='2' id="repeatChange">Daily</option>
<option value='3' id="repeatChange">Weekly</option>
<option value='4' id="repeatChange">Biweekly</option>
<option value='5' id="repeatChange">Monthly</option>
</select>
<label id="labelHowMuch">How many times ?</label>
<input type="text" id="repeatHowMuch" class="text ui-widget-content ui-corner-all"/>
这是jquery部分:
$('#labelHowMuch').remove();
$('#repeatHowMuch').remove();
$(document).on('click', '#repeatChange' , function() {
$('#labelHowMuch').append($('#dropDown'));
$('#repeatHowMuch').append($('#labelHowMuch'));
});
提前致谢!
答案 0 :(得分:1)
这是你犯很多错误的正确方法:
$('#labelHowMuch').hide();
$('#repeatHowMuch').hide();
$(document).on('change', '#dropDown' , function() {
if($(this)[0].value != 1){
$('#labelHowMuch').show();
$('#repeatHowMuch').show();
}
else{
$('#labelHowMuch').hide();
$('#repeatHowMuch').hide();
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="dropDown">
<option value='1'>Doesn't repeat</option>
<option value='2'>Daily</option>
<option value='3'>Weekly</option>
<option value='4'>Biweekly</option>
<option value='5'>Monthly</option>
</select>
<label id="labelHowMuch">How many times ?</label>
<input type="text" id="repeatHowMuch" class="text ui-widget-content ui-corner-all"/>