我想在检查后取出两个不同的值，并取消选中jquery中的复选框

Question

$('#exp2').click(function(){
if ($(this).attr('checked',true)){          
    var getamt2 = $(this).val();
    var getamt4 = $('#amount_span').html(); alert(getamt4);
    /*var tot = getamt0+getamt1;
    $('#amount_span').html();*/
    $('#amount_span').html( parseInt(getamt4) + parseInt(getamt2)); 
}  
else{                   
        var getamt2 = $(this).val();
        var getamt4 = $('#amount_span').html(); alert('else');
       /*var tot = getamt0+getamt1;
       $('#amount_span').html();*/
       $('#amount_span').html( parseInt(getamt4) - parseInt(getamt2));

}

Answer 1

试试这个：

if($(this).prop('checked')){
    your code..
}

和

if($(this).is(':checked')){
    your code..
}

像这样：

$('#exp2').click(function(){
if ($(this).prop('checked')){  // <--- here is the edit         
    var getamt2 = $(this).val();
    var getamt4 = $('#amount_span').html(); alert(getamt4);
    /*var tot = getamt0+getamt1;
    $('#amount_span').html();*/
    $('#amount_span').html( parseInt(getamt4) + parseInt(getamt2)); 
}  
else{                   
        var getamt2 = $(this).val();
        var getamt4 = $('#amount_span').html(); alert('else');
       /*var tot = getamt0+getamt1;
       $('#amount_span').html();*/
       $('#amount_span').html( parseInt(getamt4) - parseInt(getamt2));
}