如何使JavaScript的计算只能在特定的DIV标签

Question

我有这样的代码，计数选择了等于5.如何只让它在

<div id="groupa"> 

这里算上选择的选择框是我的代码已经

function getSelectedValues(){ 
var matches = $('select').filter(function(){ 
return $(this).val() == '5'; 
}).length; 
// here's where we just update that new <span> 
$('span#result5').text(matches); 
} 

Answer 1

改变你的选择

function getSelectedValues(){ 
var matches = $('#groupa select').filter(function(){ 
return $(this).val() == '5'; 
}).length; 
// here's where we just update that new <span> 
$('span#result5').text(matches); 
}