SOURCE

  window.onload = function () {
    
    getCapthaId();

    function getCapthaId() {
                //  initNECaptcha 为全局函数,可直接调用
                initNECaptcha({
                    captchaId: 'c72c6f12ee364001a4b0374cd5358a19', // 这里填入申请到的验证码id
                    element: '#captcha_div',
                    mode: 'embed',
                    width: '320px',
                    onVerify: function(err, ret) {
                        if (!err) {
                            if (ret['validate']) { // true:验证通过 false:验证失败
                                console.log(ret)
                                // $.ajax({
                                //     url: '/checkres.ac?key=' + ret,
                                //     type: 'get',
                                //     dataType: "text",
                                //     success: function(res) {
                                //         location.reload();
                                //     }
                                // })
                            }
                        } else {
                            text = ($('.yidun_tips__text').text())
                            img = $('.yidun_bg-img').attr('src')
                        }
                    }
                }, function(instance) {
                    // 初始化成功后得到验证实例instance ,可以调用实例的方法
                    $(".yidun_bgimg").append('<span class="point_span"></span>')
                   
                }, function(err) {
                    console.log(err)
                    // 初始化失败后触发该函数,err 对象描述当前错误信息
                })
            }
    setTimeout(()=>{
       let arr = [
                [20, 30],
                [80, 80],
                [120, 130]
            ]

            for(let i=0;i<arr.length;i++){
              
                imitateClick(arr[i][0],arr[i][1]);
            }
    },3000)
           


            function imitateClick( iClientX, iClientY) {
               let oElement =document.querySelectorAll('.point_span')[0];
              $(oElement).animate({
                left:iClientX,
                top:iClientY
              },300,function(){
                console.log(document.defaultView)
                var oEvent;
                if (document.createEventObject) { //For IE
                    oEvent = document.createEventObject();
                    oEvent.clientX = iClientX;
                    oEvent.clientY = iClientY;
                    oElement.fireEvent("onclick", oEvent);
                } else {
                    oEvent = document.createEvent("MouseEvents");
                 
                    // oEvent.initMouseEvent("click", true, true, window, 0, 0, 0,
                    //     iClientX, iClientY /*, false, false, false, false, 0, null*/ );
                   oEvent.initMouseEvent("click", true, true, window, 0, 0, 0, (iClientX), (iClientY), false, false, false, false, 0, null);
                    oElement.dispatchEvent(oEvent);
                  
                   $(oElement).animate({
                            left: 0,
                            top: 0
                        }, 60)
                }
              })
               
            
            }
        }

  <form style="width: 320px;" action="/login" method="post">
        <div id="captcha_div"></div>
    </form>
 
<div class="layout_parent">
        <div class="layout_label point"></div>
        <div class="layout_label label_1"></div>
        <div class="layout_label label_2"></div>
        <div class="layout_label label_3"></div>
    </div>
<script src="https://cstaticdun.126.net/load.min.js"></script>

*{margin:0;padding:0} 
.layout_parent {
            background: #f2f2f2;
            border: 1px solid #ccc;
            width: 300px;
            height: 200px;
            position: relative;
        }

        .layout_label {
            position: absolute;
            background: #f00;
            width: 20px;
            height: 20px;
        }

        .label_1 {
            top: 30px;
            left: 20px;
        }

        .label_2 {
            top: 80px;
            left: 80px;
        }

        .label_3 {
            top: 130px;
            left: 120px;
        }
        .point{
            top: 0;
            left: 0;
            background: blue;
            z-index: 2;
        }
  .point_span {
            background: rgb(115, 232, 240);
            height: 20px;
            width: 20px;
            display: block;
            position: absolute;
            border-radius: 50%;
            top: 0;
            left: 0;
        }
.yidun_panel-placeholder{
  position:relative;
}