Notes ===== ## Todo - rst online editor -> [asciidoc editor](espadrine.github.io/AsciiDocBox/) ## Angular - broken links in docs - ## Interesting - [Hash consing](https://en.wikipedia.org/wiki/Hash_consing) - [React native apps playground](https://rnplay.org/) - [Shadow DOM visualizer](http://html5-demos.appspot.com/shadowdom-visualizer) ## rPi abaudbj4ljgi6p4q.onion ## Console log stuff ``` a=[[1,2],[3,4],[5,6]] [Array[2], Array[2], Array[2]] a.indexOf([3,4]) -1 [] [] +[] 0 +[]+[] "0" +[]++[] VM212:2 Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 +[]++ VM213:2 Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 +++[] VM218:2 Uncaught ReferenceError: Invalid left-hand side expression in prefix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 ++(+[]) VM223:2 Uncaught ReferenceError: Invalid left-hand side expression in prefix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 (+[]) 0 (+[])++ VM225:2 Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 z=(+[]) 0 z++ 0 z 1 one=(+[])++ VM261:2 Uncaught ReferenceError: Invalid left-hand side expression in postfix operation(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 ![] false !![] true +[]+![] 0 []+![] "false" []+![][+[]] "true" ([]+![])[+[]] "f" parseInt('1001',2) 9 f=![] false t=!f true 'a'+1 "a1" String.fromCharCode(0x48,0x65,0x6c,0x6c,0x6f,0x20,0x57,0x6f,0x73,0x6c,0x64,0x21) "Hello Wosld!" String.fromCharCode(0x48,0x65,0x6c,0x6c,0x6f,0x20,0x57,0x6f,0x72,0x6c,0x64,0x21) "Hello World!" [0,1,0,1].join() "0,1,0,1" [0,1,0,1].join('') "0101" [,,,,,].length 5 [].length 0 [,,,,].length 4 String.fromCharCode(5*5) "" String.fromCharCode(5*5+5+5) "#" 1<<2 4 1<<2+1 8 1+1<<2 8 (1<<2)+1 5 !false+2 3 3+true 4 this Window {external: Object, chrome: Object, document: document, a: Array[3], z: 1…} this === window true foo = 1 1 delete foo true foo VM1182:2 Uncaught ReferenceError: foo is not defined(…)(anonymous function) @ VM1182:2InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 this.foo = 2 2 delete foo true foo VM1269:2 Uncaught ReferenceError: foo is not defined(…)(anonymous function) @ VM1269:2InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 f=function(){'use strict';var foo = 1;var d = delete foo;return [d, foo]} VM1496:2 Uncaught SyntaxError: Delete of an unqualified identifier in strict mode.(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 f=function(){'use strict';var foo = 1;var d = delete this.foo;return [d, foo]} (){'use strict';var foo = 1;var d = delete this.foo;return [d, foo]} f (){'use strict';var foo = 1;var d = delete this.foo;return [d, foo]} f() VM1497:2 Uncaught TypeError: Cannot convert undefined or null to object(…)f @ VM1497:2(anonymous function) @ VM1517:2InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 f.call(this) [true, 1] this.foo undefined this.foo = 2 2 foo 2 f.call(this) [true, 1] foo VM1711:2 Uncaught ReferenceError: foo is not defined(…)(anonymous function) @ VM1711:2InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 constructor Window() { [native code] } delete 1 true x=1 1 `x="$x"` "x="$x"" `x is ${x} now.` "x is 1 now." `x is ${this} now.` "x is [object Window] now." Object.getPrototypeOf(this) Window {TEMPORARY: 0, PERSISTENT: 1} f (){'use strict';var foo = 1;var d = delete this.foo;return [d, foo]} f.prototype f {}constructor: ()arguments: (...)caller: (...)length: 0name: ""prototype: f__proto__: ()__proto__: Object Object.getPrototypeOf(f.prototype) Object {}__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__() Object.getPrototypeOf(f.prototype) === Object false Object Object() { [native code] } (Object) Object() { [native code] } console.dir(Object) VM2454:2 Object()arguments: nullassign: assign()caller: nullcreate: create()defineProperties: defineProperties()defineProperty: defineProperty()deliverChangeRecords: deliverChangeRecords()freeze: freeze()getNotifier: getNotifier()getOwnPropertyDescriptor: getOwnPropertyDescriptor()getOwnPropertyNames: getOwnPropertyNames()getOwnPropertySymbols: getOwnPropertySymbols()getPrototypeOf: getPrototypeOf()is: is()isExtensible: isExtensible()isFrozen: isFrozen()isSealed: isSealed()keys: keys()length: 1name: "Object"observe: observe()preventExtensions: preventExtensions()prototype: Objectseal: seal()setPrototypeOf: setPrototypeOf()unobserve: unobserve()__proto__: ()apply: apply()arguments: (...)get arguments: ThrowTypeError()set arguments: ThrowTypeError()bind: bind()call: call()caller: (...)get caller: ThrowTypeError()set caller: ThrowTypeError()constructor: Function()length: 0name: ""toString: toString()__proto__: Object__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__() undefined Object.getPrototypeOf(Object) () {} console.dir(Object.getPrototypeOf(Object)) VM2587:2 anonymous()apply: apply()arguments: (...)get arguments: ThrowTypeError()set arguments: ThrowTypeError()bind: bind()call: call()caller: (...)get caller: ThrowTypeError()set caller: ThrowTypeError()constructor: Function()length: 0name: ""toString: toString()__proto__: Object__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__()No Scopes undefined console.dir(Object.getPrototypeOf(Function)) VM2596:2 anonymous()apply: apply()arguments: (...)get arguments: ThrowTypeError()set arguments: ThrowTypeError()bind: bind()call: call()caller: (...)get caller: ThrowTypeError()set caller: ThrowTypeError()constructor: Function()length: 0name: ""toString: toString()__proto__: Object__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__()No Scopes undefined o=Object.create(null) Object {} console.dir(o) VM2746:2 ObjectNo Properties undefined Object.getPrototypeOf(o) null o Object {} 'o='+o VM2836:2 Uncaught TypeError: Cannot convert object to primitive value(…)(anonymous function) @ VM2836:2InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 o.toString = () => '[o]' () => '[o]' 'o='+o "o=[o]" 1+o "1[o]" o2={} Object {} 1+o2 "1[object Object]" o2.valueOf() Object {} o.valueOf = () => 1000 () => 1000 1+o 1001 typeof o "object" +o 1000 +() VM3367:2 Uncaught SyntaxError: Unexpected token )(…)InjectedScript._evaluateOn @ VM72:875InjectedScript._evaluateAndWrap @ VM72:808InjectedScript.evaluate @ VM72:664 +[] 0 +[,] 0 +[1] 1 +[2,3] NaN +[[]] 0 +[[],[]] NaN +[[],[],[]] NaN f = () => {} () => {} f.prototype undefined f = function(){} (){} f.prototype f {}constructor: ()__proto__: Object console.dir(f.prototype) VM3701:2 fconstructor: ()__proto__: Object undefined console.dir(f.prototype) VM3708:2 f undefined p=f.prototype f {} Object.getPrototypeOf(p) Object {}__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__() Object.getPrototypeOf(p) === Object.prototype true p === Object false gp=Object.getPrototypeOf getPrototypeOf() { [native code] } gp(p) Object {} gp(Object) () {} gp(o) null gp(gp(Object)) Object {}__defineGetter__: __defineGetter__()__defineSetter__: __defineSetter__()__lookupGetter__: __lookupGetter__()__lookupSetter__: __lookupSetter__()constructor: Object()hasOwnProperty: hasOwnProperty()isPrototypeOf: isPrototypeOf()propertyIsEnumerable: propertyIsEnumerable()toLocaleString: toLocaleString()toString: toString()valueOf: valueOf()get __proto__: get __proto__()set __proto__: set __proto__() gp(gp(gp(Object))) null gp(Object.prototype) null gp(p) Object {} gp(Function) () {} gp(Function.prototype) Object {} gp(gp(Function.prototype)) null Object.prototype Object {} Object.prototype === gp(Function.prototype) true ```