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Showing posts with the label Null
Why Is My Element Null?

Why Is My Element Null?

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Why when I do an alert of the value (see below) it returns null? When an element with that ID exist… Read more Why Is My Element Null?
Javascript: What Is The Data Type Of Null?

Javascript: What Is The Data Type Of Null?

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It is said that null, in JavaScript, is a primary type. However, when I use the operator typeof on … Read more Javascript: What Is The Data Type Of Null?
Why Can't A Property Be Added To A Null Value?

Why Can't A Property Be Added To A Null Value?

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If null value of javascript is an empty object so why can't add a property to it? the below cod… Read more Why Can't A Property Be Added To A Null Value?
Chrome.extension.getbackgroundpage() Returns Null After Awhile

Chrome.extension.getbackgroundpage() Returns Null After Awhile

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When my chrome extension loads on chrome startup, everything seems to be ok and chrome.extension.ge… Read more Chrome.extension.getbackgroundpage() Returns Null After Awhile
Cannot Read Property 'length' Of Null In Javascript For Loop

Cannot Read Property 'length' Of Null In Javascript For Loop

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I'm trying to make a markdown editor like Stack Overflow has. I get this error listed in the ti… Read more Cannot Read Property 'length' Of Null In Javascript For Loop