当我取消选中任何复选框时,它也会附加结果。我想删除它。我该怎么办?
$(document).ready(function(){
$('.chk_val').on('click',function(){
var result = $(this).val();
$('#course').append(result);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="show">
<span id="course"> </span>
</div>
<input type="checkbox" class="chk_val" value="20" />20
<br />
<input type="checkbox" class="chk_val" value="30" />30
<br />
<input type="checkbox" class="chk_val" value="40" />40
<br />
答案 0 :(得分:2)
$(document).ready(function() {
$('.chk_val').on('click', function() {
var result = $('.chk_val:checked').map(function() {
return $(this).val()
}).get();
$('#course').html(result);
});
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="show">
<span id="course"> </span>
</div>
<input type="checkbox" class="chk_val" value="20" />20
<br />
<input type="checkbox" class="chk_val" value="30" />30
<br />
<input type="checkbox" class="chk_val" value="40" />40
<br />
&#13;
.html()
更改div的html