zoukankan      html  css  js  c++  java
  • 爬虫_监控某个元素所有事件

    var DOMEvents = {
    UIEvent: "abort DOMActivate error load resize scroll select unload",
    ProgressEvent: "abort error load loadend loadstart progress progress timeout",
    Event: "abort afterprint beforeprint cached canplay canplaythrough change chargingchange chargingtimechange checking close dischargingtimechange DOMContentLoaded downloading durationchange emptied ended ended error error error error fullscreenchange fullscreenerror input invalid languagechange levelchange loadeddata loadedmetadata noupdate obsolete offline online open open orientationchange pause pointerlockchange pointerlockerror play playing ratechange readystatechange reset seeked seeking stalled submit success suspend timeupdate updateready visibilitychange volumechange waiting",
    AnimationEvent: "animationend animationiteration animationstart",
    AudioProcessingEvent: "audioprocess",
    BeforeUnloadEvent: "beforeunload",
    TimeEvent: "beginEvent endEvent repeatEvent",
    OtherEvent: "blocked complete upgradeneeded versionchange",
    FocusEvent: "blur DOMFocusIn  Unimplemented DOMFocusOut  Unimplemented focus focusin focusout",
    MouseEvent: "click contextmenu dblclick mousedown mouseenter mouseleave mousemove mouseout mouseover mouseup show",
    SensorEvent: "compassneedscalibration Unimplemented userproximity",
    OfflineAudioCompletionEvent: "complete",
    CompositionEvent: "compositionend compositionstart compositionupdate",
    ClipboardEvent: "copy cut paste",
    DeviceLightEvent: "devicelight",
    DeviceMotionEvent: "devicemotion",
    DeviceOrientationEvent: "deviceorientation",
    DeviceProximityEvent: "deviceproximity",
    MutationNameEvent: "DOMAttributeNameChanged DOMElementNameChanged",
    MutationEvent: "DOMAttrModified DOMCharacterDataModified DOMNodeInserted DOMNodeInsertedIntoDocument DOMNodeRemoved DOMNodeRemovedFromDocument DOMSubtreeModified",
    DragEvent: "drag dragend dragenter dragleave dragover dragstart drop",
    GamepadEvent: "gamepadconnected gamepaddisconnected",
    HashChangeEvent: "hashchange",
    KeyboardEvent: "keydown keypress keyup",
    MessageEvent: "message message message message",
    PageTransitionEvent: "pagehide pageshow",
    PopStateEvent: "popstate",
    StorageEvent: "storage",
    SVGEvent: "SVGAbort SVGError SVGLoad SVGResize SVGScroll SVGUnload",
    SVGZoomEvent: "SVGZoom",
    TouchEvent: "touchcancel touchend touchenter touchleave touchmove touchstart",
    TransitionEvent: "transitionend",
    WheelEvent: "wheel"
    }
    
    var RecentlyLoggedDOMEventTypes = {};
    
    for(DOMEvent in DOMEvents){
    
      var DOMEventTypes = DOMEvents[DOMEvent].split(' ');
    
      DOMEventTypes.filter(function(DOMEventType){
        var DOMEventCategory = DOMEvent + ' '+DOMEventType;  
        document.addEventListener(DOMEventType, function(e){    //此例子是监控document的所有元素,实际用途中可只监控某个元素
          if(RecentlyLoggedDOMEventTypes[DOMEventCategory]) return;
          RecentlyLoggedDOMEventTypes[DOMEventCategory] = true;
          setTimeout(function(){ RecentlyLoggedDOMEventTypes[DOMEventCategory] = false }, 5000);
          var isActive = e.target==document.activeElement;
          if(isActive) {
            console.info(DOMEventCategory, 
              ' target=', e.target, 
              ' active=', document.activeElement, 
              ' isActive=', true );
          } else {
            console.log(DOMEventCategory, 
              ' target=', e.target,
              ' active=', document.activeElement, 
              ' isActive=', false );
          }
    
        }, true);
      });
    
    }

    此段代码是在浏览器的console中执行

  • 相关阅读:
    Linux基础知识整理
    小白学习之路,基础四(函数的进阶)
    关于高通量数据格式
    数据库管理系统
    Linux 基本操作
    生信研究内容
    redis6 多线程特性
    Centos8配置NFS4
    关于Mybatis将查询结果中添加常量列并返回
    关于swagger文档的使用方法
  • 原文地址:https://www.cnblogs.com/gisblogs/p/5368204.html
Copyright © 2011-2022 走看看