Top "Hasownproperty" questions

What is property in hasOwnProperty in JavaScript?

Consider: if (someVar.hasOwnProperty('someProperty') ) { // Do something(); } else { // Do somethingElse(); } What is the right use/explanation of hasOwnProperty('someProperty')? Why …

javascript object hasownproperty

Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?

If I understand correctly, each and every object in JavaScript inherits from the Object prototype, which means that each and …

javascript requirejs prototypal-inheritance hasownproperty

object has no hasOwnProperty method (i.e. it's undefined) - IE8

This seems quite bizarre. Here's my experiment in the IE8 console: typeof obj1 // "object" obj1.hasOwnProperty // {...} typeof obj2 // "object" obj2.…

javascript internet-explorer-8 ie-developer-tools hasownproperty

Benefit of using Object.hasOwnProperty vs. testing if a property is undefined

Since hasOwnProperty has some caveats and quirks (window / extensive use in Internet Explorer 8 issues, etc.): Is there any reason to …

javascript jquery object undefined hasownproperty

Why does hasOwnProperty not recognise functions on an object's prototype?

I understand that the hasOwnProperty method in JavaScript exists to identify properties only of the current type, but there is …

javascript prototype hasownproperty

Using hasOwnProperty() on an array

Can I use hasOwnProperty() on an array? I have this array of RGBA values: colors = [[240,120,120,255], [125,222,111,255], [9,56,237,255], [240,120,120,255], [240,120,120,255], [240,120,120,255]] I'd like to create an …

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JavaScript object.hasOwnProperty() with a dynamically generated property

I have an object that I am passing to a function, that I am trying to figure out if the …

javascript jquery arrays hasownproperty

hasOwnProperty with more than one property

I'm trying to discover if an object has some properties and I'm having trouble using the hasOwnProperty method. I'm using …

javascript object methods hasownproperty

angular ie8 "Object doesn't support property or method 'hasOwnProperty'" workaround

I'm using angular-1.2.1.js on ie8 and getting the error: Object doesn't support property or method 'hasOwnProperty' (inside the angular …

javascript internet-explorer internet-explorer-8 hasownproperty

Which object does not have `hasOwnProperty` in JavaScript?

With some values, calling hasOwnProperty throws an error. Let's check the following code: null.hasOwnProperty('bar') // Error undefined.hasOwnProperty('bar') // …

javascript node.js ecmascript-6 strict hasownproperty