Event.returnValue - Web APIs
the event property returnvalue indicates whether the default action for this event has been prevented or not.
... note: while returnvalue has been adopted into the dom standard, it is present primarily to support existing code.
... syntax event.returnvalue = bool; var bool = event.returnvalue; value a boolean value which is true if the event has not been canceled; otherwise, if the event has been canceled or the default has been prevented, the value is false.
...And 4 more matches

HTMLDialogElement.returnValue - Web APIs
the returnvalue property of the htmldialogelement interface gets or sets the return value for the <dialog>, usually to indicate which button the user pressed to close it.
... syntax dialoginstance.returnvalue = 'myreturnvalue'; var myreturnvalue = dialoginstance.returnvalue; value a domstring representing the returnvalue of the dialog.
...ion> </select> </label></p> <menu> <button>cancel</button> <button>confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var dialog = document.getelementbyid('favdialog'); dialog.returnvalue = 'favanimal'; function opencheck(dialog) { if (dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } function handleuserinput(returnvalue) { if (returnvalue === 'cancel' || returnvalue == null) { // user canceled the dialog, do nothing } else if (returnvalue === 'confirm') { ...
...And 3 more matches

JS_SetCallReturnValue2
syntax void js_setcallreturnvalue2(jscontext *cx, jsval v); name type description cx jscontext * the context in which the native function is running.
... description calling js_setcallreturnvalue2 indicates to the runtime that the native will return a value of type reference.
... an example is in js/src/js.c; searching for js_setcallreturnvalue2 should find it.

Bytecode Descriptions
it should be an object of the form {value: returnvalue, done: true}.
... getrval stack: ⇒ rval push the current stack frame's returnvalue.
...every stack frame has a returnvalue slot, used by top-level scripts, generators, async functions, and derived class constructors.
...And 5 more matches

Window: beforeunload event - Web APIs
however note that not all browsers support this method, and some instead require the event handler to implement one of two legacy methods: assigning a string to the event's returnvalue property returning a string from the event handler.
... examples the html specification states that authors should use the event.preventdefault() method instead of using event.returnvalue.
... event.preventdefault(); // chrome requires returnvalue to be set.
... event.returnvalue = ''; }); specifications specification status comment html living standardthe definition of 'beforeunload' in that specification.

BeforeUnloadEvent - Web APIs
when a non-empty string is assigned to the returnvalue event property, a dialog box appears, asking the users for confirmation to leave the page (see example below).
...,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">beforeunloadevent</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} bubbles no cancelable yes target objects defaultview interface event examples window.addeventlistener("beforeunload", function( event ) { event.returnvalue = "\o/"; }); // is equivalent to window.addeventlistener("beforeunload", function( event ) { event.preventdefault(); }); webkit-derived browsers don't follow the spec for the dialog box.
... window.addeventlistener("beforeunload", function (e) { var confirmationmessage = "\o/"; (e || window.event).returnvalue = confirmationmessage; // gecko + ie return confirmationmessage; /* safari, chrome, and other * webkit-derived browsers */ }); specifications specification status comment html living standardthe definition of 'beforeunloadevent' in that specification.

HTMLDialogElement.close() - Web APIs
an optional domstring may be passed as an argument, updating the returnvalue of the the dialog.
... syntax dialoginstance.close(returnvalue); parameters returnvalue optional a domstring representing an updated value for the htmldialogelement.returnvalue of the dialog.
...cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...

HTMLDialogElement - Web APIs
htmldialogelement.returnvalue a domstring that sets or returns the return value for the dialog.
...an optional domstring may be passed as an argument, updating the returnvalue of the the dialog.
...cel</button> <button type="submit">confirm</button> </menu> </form> </dialog> <menu> <button id="updatedetails">update details</button> </menu> <script> (function() { var updatebutton = document.getelementbyid('updatedetails'); var cancelbutton = document.getelementbyid('cancel'); var dialog = document.getelementbyid('favdialog'); dialog.returnvalue = 'favanimal'; function opencheck(dialog) { if(dialog.open) { console.log('dialog open'); } else { console.log('dialog closed'); } } // update button opens a modal dialog updatebutton.addeventlistener('click', function() { dialog.showmodal(); opencheck(dialog); }); // form cancel button closes the d...

Adding windows and dialogs - Archive of obsolete content
let somevalue = 2; let returnvalue = { accepted : false , result : "" }; window.opendialog( "chrome://xulschoolhello/content/somedialog.xul", "xulschoolhello-some-dialog", "chrome,centerscreen", somevalue, returnvalue); // you can send as many extra parameters as you need.
... // if (returnvalue.accepted) { do stuff } the optional parameters are available in the dialog code through the window.arguments property: let somevalue = window.arguments[0]; let returnvalue = window.arguments[1]; // returnvalue.accepted = true; // returnvalue.result = "something"; the parameter named returnvalue is an object that the dialog will modify to reflect what the user did in it.

mozbrowseractivitydone
if the activity has a returnvalue set to true, then the activity is consumed when postresult or posterror is invoked on the activity by the receiving app.
... note: for activities where the receiving app's activity definition in its manifest does not include returnvalue or returnvalue is false, no mozbrowseractivitydone event will be generated as of the landing of bug 1194525 in firefox os 2.5.

NSS API Guidelines
secport_verify_pointer(classname, pointer, secerror, returnvalue)- check if a given pointer really belongs to the requested class.
... if it doesn't set the error secerror and return the value returnvalue.

CustomEvent - Web APIs
(mozilla-specific.) event.returnvalue a historical property introduced by internet explorer and eventually adopted into the dom specification in order to ensure existing sites continue to work.
... ideally, you should try to use event.preventdefault() and event.defaultprevented instead, but you can use returnvalue if you choose to do so.

Event - Web APIs
(mozilla-specific.) event.returnvalue a historical property introduced by internet explorer and eventually adopted into the dom specification in order to ensure existing sites continue to work.
... ideally, you should try to use event.preventdefault() and event.defaultprevented instead, but you can use returnvalue if you choose to do so.

Index - Web APIs
1252 event.returnvalue api, dom, event, property, reference, action, default, returnvalue the event property returnvalue indicates whether the default action for this event has been prevented or not.
... 1610 htmldialogelement.returnvalue api, experimental, html dom, htmldialogelement, property, reference, returnvalue the returnvalue property of the htmldialogelement interface gets or sets the return value for the <dialog>, usually to indicate which button the user pressed to close it.

Range.compareNode() - Web APIs
ch (e) { noderange.selectnodecontents(node); } var nodeisbefore = range.compareboundarypoints(range.start_to_start, noderange) == 1; var nodeisafter = range.compareboundarypoints(range.end_to_end, noderange) == -1; if (nodeisbefore && !nodeisafter) return 0; if (!nodeisbefore && nodeisafter) return 1; if (nodeisbefore && nodeisafter) return 2; return 3; } syntax returnvalue = range.comparenode( referencenode ); parameters referencenode the node to compare with the range.
... example range = document.createrange(); range.selectnode(document.getelementsbytagname("div").item(0)); returnvalue = range.comparenode(document.getelementsbytagname("p").item(0)); notes this method is obsolete; you should use the w3c dom range.compareboundarypoints() method.