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• Document.getElementById()

  The Document method getElementById() returns an Element object representing the element whose id property

  developer.mozilla.org/en-US/docs/Web/API/Document/getElementById

• Using the W3C DOM

  or ID (Id versus name when using getElementById, MSDN: getElementById Method). IE-specific ways…5 through 7 have a flawed implementation of getElementById(), which returns the first element with a matching…which that style corresponds by using the DOM's getElementById or one of the other methods described in the

  developer.mozilla.org/en-US/docs/Archive/Using_Web_Standards_in_your_Web_Pages/Using_the_W3C_DOM

• Modifying a XUL Interface

  with getElementById(), which is the container to add a new button to. The function getElementbyID() does…the oncommand attribute that referenced it. getElementById() only knows the box it is looking to find…appendChild() function of the particular box found by getElementbyID() is called to add the button to it. At this

  developer.mozilla.org/en-US/docs/Mozilla/Tech/XUL/Tutorial/Modifying_a_XUL_Interface

• Document.onoffline

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/onoffline

• Browser Feature Detection

  getElementsByTagNameNS true false true getElementById true true true   DOM Level… writeln true true true getElementById true true true getElementsByName…{name: 'writeln', 'supported': false}, {name: 'getElementById', 'supported': false}, {name: 'getElementsByName'…'getElementsByTagNameNS', 'supported': false}, {name: 'getElementById', 'supported': false} ], 'DOMCSS1': [

  developer.mozilla.org/en-US/docs/Archive/Web/Browser_feature_detection

• Document.ononline

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/ononline

• Document.onfullscreenchange

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/onfullscreenchange

• Document.defaultView

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/defaultView

• Document.onfullscreenerror

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/onfullscreenerror

• Document.elementsFromPoint()

  exitPointerLock() getAnimations() getBoxObjectFor()getElementById()getElementsByClassName()getElementsByName

  developer.mozilla.org/en-US/docs/Web/API/Document/elementsFromPoint