onclick处理程序应该在函数调用后返回false。如。

onclick = " ConfirmDelete ();返回错误;" >

<form onsubmit="return confirm('Are you sure?');" />

适用于表单。表单特定的问题:JavaScript表单提交-确认或取消提交对话框

如果你对一些快速漂亮的解决方案与css格式感兴趣，你可以使用SweetAlert

$(function(){ $(".delete").click(function(){ swal({ title: "Are you sure?", text: "You will not be able to recover this imaginary file!", type: "warning", showCancelButton: true, confirmButtonColor: "#DD6B55", confirmButtonText: "Yes, delete it!", closeOnConfirm: false }).then(isConfirmed => { if(isConfirmed) { $(".file").addClass("isDeleted"); swal("Deleted!", "Your imaginary file has been deleted.", "success"); } }); }); }); html { zoom: 0.7 } /* little "hack" to make example visible in stackoverflow snippet preview */ body > p { font-size: 32px } .delete { cursor: pointer; color: #00A } .isDeleted { text-decoration:line-through } <script src="https://code.jquery.com/jquery-2.1.3.min.js"></script> <script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script> <link rel="stylesheet" href="http://t4t5.github.io/sweetalert/dist/sweetalert.css"> <p class="file">File 1 <span class="delete">(delete)</span></p>

<a href="javascript:;" onClick="if(confirm('Are you sure you want to delete this product')){del_product(id);}else{ }" class="btn btn-xs btn-danger btn-delete" title="Del Product">Delete Product</a>


function del_product(id){
    $('.process').css('display','block');
    $('.process').html('<img src="./images/loading.gif">');
    $.ajax({
        'url':'./process.php?action=del_product&id='+id,
        'type':"post",
        success: function(result){
            info=JSON.parse(result);
            if(result.status==1){
            setTimeout(function(){
                    $('.process').hide();
                    $('.tr_'+id).hide();
                },3000);
                setTimeout(function(){
                    $('.process').html(result.notice);
                },1000);
            }else if(result.status==0){
                setTimeout(function(){
                    $('.process').hide();
                },3000);
                setTimeout(function(){
                    $('.process').html(result.notice);
                },1000);

                }
            }
        });
}

使用jQuery:

$(".delete-link").on("click", null, function(){
        return confirm("Are you sure?");
    });

对于选择选项框，要做到这一点要困难得多。 下面是解决方案:

<select onchange="if (this.value == 'delete' && !confirm('THIS ACTION WILL DELETE IT!\n\nAre you sure?')){this.value=''}">
    <option value=''> &nbsp; </option>
    <option value="delete">Delete Everything</option>
</select>