为在js jquery中添加的标签添加点击事件

直接使用click事件是不起作用的，我平常使用的两种方法

1、on事件

var html1='';
html1 +=`<div>
                    <button type="button" class="btn btn-primary sure btn-mian" onclick="sure()">确认提交</button>
                    <button type="button" class="btn btn-default " data-dismiss="modal">暂不提交</button>
         </div>`
$('.modal-footer').append(html1);
$('div').on('click','.sure',function(){console.log("+++");});

2、onclick事件

var html1='';
html1 +=`<div>
                    <button type="button" class="btn btn-primary sure btn-mian" onclick="sure()">确认提交</button>
                    <button type="button" class="btn btn-default " data-dismiss="modal">暂不提交</button>
         </div>`
$('.modal-footer').append(html1);
functionsure(){console.logO("===");}