js弹框效果 js实现弹框效果

<!-- 弹出层 -->
<div id="popLayer"></div>  <!--黑色蒙版 -->
<div id="popBox">
   <div class="close">
      X
   </div>
   <div>
     <!-- 内容 -->
  </div>
</div>

//点击关闭按钮
var close = document.querySelector(".close")
close.onclick = function () {
  console.log("点击")
  var popBox = document.getElementById("popBox");
  var popLayer = document.getElementById("popLayer");
  popBox.style.display = "none";
  popLayer.style.display = "none";
}


//需要显示时调用
var popLayer = document.getElementById("popLayer");
popBox.style.display = "block";
popLayer.style.display = "block";

/* 弹出层 */
#popLayer {
  display: none;
  background-color: #000;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
  opacity: 0.6;
}

/*弹出层*/
#popBox {
  display: none;
  background-color: #FFFFFF;
  z-index: 11;
  width: 220px;
  height: 300px;
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  margin: auto;
}

/*关闭按钮*/
#popBox .close {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  position: absolute;
  border: 1px solid #fff;
  color: #fff;
  text-align: center;
  line-height: 20px;
  right: 8px;
  top: 8px;
  z-index: 50;
}

#popBox .close a {
  text-decoration: none;
  color: #2D2C3B;
}