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How to communicate between iframe and the parent site?

...ame: window.onmessage = function(e){ if (e.data == 'hello') { alert('It works!'); } }; If you are posting message from iframe to parent window window.top.postMessage('hello', '*') share | ...
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Is it correct to use JavaScript Array.sort() method for shuffling?

...rr.join("\n")+"\n\nTime taken: " + ((end - start)/1000) + " seconds."; }; alert("random sort: " + test([1,2,3,4], 100000, randSort)); alert("shuffle: " + test([1,2,3,4], 100000, shuffle)); share | ...
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How to debug JavaScript / jQuery event bindings with Firebug or similar tools?

...dow.console) in case it gets left in the code (much easier to do than with alert()) and breaks IE. – thepeer Jan 24 '12 at 16:46 ...
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Does the APNS device token ever change, once created?

... be thought of as invariant. [I'm not worried if I have to update my test scripts with new tokens every two years, especially since I change phones every year.] share | improve this answer ...
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What is the exact meaning of IFS=$'\n'?

... can be found in the Bash documentation.found I guess it's forcing the script to escape the line feed to the proper ANSI-C standard. share | improve this answer | follow ...
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How to use a keypress event in AngularJS?

..... $scope.myFunct = function(keyEvent) { if (keyEvent.which === 13) alert('I am an alert'); } ... share | improve this answer | follow | ...
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Calling dynamic function with dynamic number of parameters [duplicate]

...). The use of call on mainfunc would also work:- function target(a) { alert(a) } var o = { suffix: " World", target: function(s) { alert(s + this.suffix); } }; mainfunc("target", "Hello"); mainfunc.call(o, "target", "Hello"); ...
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FormData.append(“key”, “value”) is not working

... @kiwicomb123 Formdata.entries() + Array.from() + alert() if it's modern enough, or look into mobile debugging – Rudie Dec 30 '16 at 8:14 ...
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Convert string to variable name in JavaScript

... var myString = "echoHello"; window[myString] = function() { alert("Hello!"); } echoHello(); Say no to the evil eval. Example here: https://jsfiddle.net/Shaz/WmA8t/ share | improve ...
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What does ':' (colon) do in JavaScript?

... method1 : function() { /* do nothing */ }, array: [5, 3, 6, 7] }; alert(o.property1); // Will display "125" A subset of this is also known as JSON (Javascript Object Notation) which is useful in AJAX calls because it is compact and quick to parse in server-side languages and Javascript ca...