手机端自己写js消息提示

原博主：https://blog.csdn.net/summer_my_sunshine/article/details/79196163 

window.alertMsg = function (txt) {
  var alertFram = document.createElement("DIV");
  alertFram.id = "alertFram";
  alertFram.style.position = "fixed";
  alertFram.style.width = "100%";
  alertFram.style.textAlign = "center";
  alertFram.style.top = "40%";
  alertFram.style.zIndex = "10001";
  strHtml = " <span style=\"font-family: 微软雅黑;display:inline-block;background:#333;color:#fff;padding:0 20px;line-height:36px;border-radius:6px; \">" + txt + "</span>";
  alertFram.innerHTML = strHtml;
  document.body.appendChild(alertFram);
  setTimeout((function () {
    alertFram.style.display = "none";
  }), 2000);
};

把上面这段写入一个新的js用script引入

使用的时候用

alertMsg('啦啦啦')