JS关闭窗口时产生的事件及用法示例

前端技术 2023/09/04 JavaScript

本文实例讲述了JS关闭窗口时产生的事件及用法。分享给大家供大家参考，具体如下：

/************ 关闭窗口，提交评价 **************/
window.onbeforeunload = function(){
   var pageWidth = Math.max(window.top.document.body.scrollWidth, window.top.document.documentElement.scrollWidth);
   var pageHeight = Math.max(window.top.document.body.scrollHeight, window.top.document.documentElement.scrollHeight);
   var cltHeight = Math.max(window.top.document.body.clientHeight, window.top.document.documentElement.clientHeight);
   var width = 400 ;
   var height = 200 ;
   var layer = window.top.document.getElementById(\"zz_layer\");
   if (layer != null) {
   layer.parentNode.removeChild(layer);
   }
   // 遮罩层
 var layer= window.top.document.createElement(\"div\");
 layer.id = \"zz_layer\";
 layer.style.filter = \"alpha(opacity=38)\";//ie
 layer.style.opacity = \"0.38\";//ff
 layer.style.width = pageWidth + \"px\";
 layer.style.height = pageHeight + \"px\";
 layer.style.position= \"absolute\";
 layer.style.top = 0;
 layer.style.left = 0;
 layer.style.backgroundColor = \"#000\";
 layer.style.zIndex = \"9998\";
 window.top.document.body.appendChild(layer);
 // 评价窗口
 var newbox = document.getElementById(\"KF_PJ_DIV\");
 newbox.style.zIndex = \"9999\";
 newbox.style.display = \"block\";
 newbox.style.width = width + \"px\";
 newbox.style.height = height + \"px\";
 newbox.style.border = \"#565656 4px solid\";
 newbox.style.background = \"#FFFFFF\";
 newbox.style.position = \"absolute\";
 newbox.style.left = pageWidth/2 + \"px\";
 newbox.style.top = (cltHeight/2) + \"px\";
 if(height/2 > (cltHeight/2)){
  newbox.style.marginTop = ( - (cltHeight/2)) + \"px\";
 }else{
  newbox.style.marginTop = ( - height/2) + \"px\";
 }
 if(width/2 > (pageWidth/2)){
  newbox.style.marginLeft = ( - (pageWidth/2)) + \"px\";
 }else{
  newbox.style.marginLeft = ( - width/2) + \"px\";
 }
   return \"您尚未对客服服务作出评价，请点击‘取消\'评分！\";
  };
  function mydiv_resize(){
  var pageWidth = Math.max(window.top.document.body.scrollWidth, window.top.document.documentElement.scrollWidth);
   var pageHeight = Math.max(window.top.document.body.scrollHeight, window.top.document.documentElement.scrollHeight);
   var cltHeight = Math.max(window.top.document.body.clientHeight, window.top.document.documentElement.clientHeight);
   var cltWidth = Math.max(window.top.document.body.clientWidth, window.top.document.documentElement.clientWidth);
   var width = 400 ;
   var height = 200 ;
  var layer = window.top.document.getElementById(\"zz_layer\");
   if (layer != null) {
   // 遮罩层
  layer.style.width = pageWidth + \"px\";
  layer.style.height = pageHeight + \"px\";
   }
 // 评价窗口
 var newbox = document.getElementById(\"KF_PJ_DIV\");
 newbox.style.left = cltWidth/2 + \"px\";
 newbox.style.top = (cltHeight/2) + \"px\";
 if(height/2 > (cltHeight/2)){
  newbox.style.marginTop = ( - (cltHeight/2)) + \"px\";
 }else{
  newbox.style.marginTop = ( - height/2) + \"px\";
 }
 if(width/2 > (pageWidth/2)){
  newbox.style.marginLeft = ( - (pageWidth/2)) + \"px\";
 }else{
  newbox.style.marginLeft = ( - width/2) + \"px\";
 }
}
window.onresize = mydiv_resize;

更多关于JavaScript相关内容感兴趣的读者可查看本站专题：《JavaScript窗口操作与技巧汇总》、《JavaScript中json操作技巧总结》、《JavaScript切换特效与技巧总结》、《JavaScript查找算法技巧总结》、《JavaScript动画特效与技巧汇总》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》

希望本文所述对大家JavaScript程序设计有所帮助。

本文地址：https://www.stayed.cn/item/9995

转载请注明出处。

本站部分内容来源于网络,如侵犯到您的权益,请 联系我

我的博客

人生若只如初见，何事秋风悲画扇。

我的标签

随笔档案