The dialogArguments property returns the parameters that were passed into the window.showModalDialog() method. This lets you determine what parameters were specified when the modal dialog was created.
value = window.dialogArguments;
WindowWindow.applicationCacheWindow.cachesWindow.closedWindow.controllersWindow.cryptoWindow.defaultStatusWindow.devicePixelRatioWindow.dialogArgumentsWindow.directoriesWindow.documentWindow.frameElementWindow.framesWindow.fullScreenWindow.historyWindow.innerHeightWindow.innerWidthWindow.lengthWindow.localStorageWindow.locationWindow.locationbarWindow.menubarWindow.messageManagerWindow.mozAnimationStartTimeWindow.mozInnerScreenXWindow.mozInnerScreenYWindow.mozPaintCountWindow.nameWindow.navigatorGlobalEventHandlers.onabortWindowEventHandlers.onafterprintWindowEventHandlers.onbeforeunloadGlobalEventHandlers.onblurGlobalEventHandlers.onchangeGlobalEventHandlers.onclickGlobalEventHandlers.oncloseGlobalEventHandlers.oncontextmenuGlobalEventHandlers.ondblclickWindow.ondevicelightWindow.ondevicemotionWindow.ondeviceorientationWindow.ondeviceproximityWindow.ondragdropGlobalEventHandlers.onerrorGlobalEventHandlers.onfocusWindowEventHandlers.onhashchangeGlobalEventHandlers.oninputGlobalEventHandlers.onkeydownGlobalEventHandlers.onkeypressGlobalEventHandlers.onkeyupWindowEventHandlers.onlanguagechangeGlobalEventHandlers.onloadGlobalEventHandlers.onmousedownGlobalEventHandlers.onmousemoveGlobalEventHandlers.onmouseoutGlobalEventHandlers.onmouseoverGlobalEventHandlers.onmouseupWindow.onmozbeforepaintWindow.onmoztimechangeWindow.onpaintWindowEventHandlers.onpopstateGlobalEventHandlers.onresetGlobalEventHandlers.onresizeGlobalEventHandlers.onscrollGlobalEventHandlers.onselectGlobalEventHandlers.onsubmitWindowEventHandlers.onunloadWindow.onuserproximityWindow.openerWindow.outerHeightWindow.outerWidthWindow.parentWindow.performanceWindow.personalbarWindow.pkcs11Window.screenWindow.screenXWindow.screenYWindow.scrollbarsWindow.scrollMaxXWindow.scrollMaxYWindow.scrollXWindow.scrollYWindow.selfWindow.sessionStorageWindow.statusWindow.statusbarWindow.toolbarWindow.topWindow.URLWindow.windowWindow.alert()WindowBase64.atob()Window.back()Window.blur()WindowBase64.btoa()Window.cancelAnimationFrame()Window.captureEvents()Window.clearImmediate()WindowTimers.clearInterval()WindowTimers.clearTimeout()Window.close()Window.confirm()Window.convertPointFromNodeToPage()Window.dump()GlobalFetch.fetch()Window.find()Window.focus()Window.forward()Window.getAttention()Window.getComputedStyle()Window.getDefaultComputedStyle()Window.getSelection()Window.home()Window.importDialog()Window.matchMedia()Window.minimize()Window.moveBy()Window.moveTo()Window.open()Window.openDialog()Window.postMessage()Window.print()Window.prompt()Window.releaseEvents()Window.requestAnimationFrame()Window.resizeBy()Window.resizeTo()Window.restore()Window.routeEvent()Window.scroll()Window.scrollBy()Window.scrollByLines()Window.scrollByPages()Window.scrollTo()Window.setCursor()Window.setImmediate()WindowTimers.setInterval()WindowTimers.setTimeout()Window.showModalDialog()Window.sizeToContent()Window.stop()Window.updateCommands()