#programmingtutorial — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #programmingtutorial, aggregated by home.social.
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Array(3) vs [,,,] Are NOT The Same!
Creating arrays in JavaScript has a hidden trap! Array(3) and [,,,] look identical but behave completely differently. Mind blown!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayconstructor #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arraycreation
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Array(3) vs [,,,] Are NOT The Same!
Creating arrays in JavaScript has a hidden trap! Array(3) and [,,,] look identical but behave completely differently. Mind blown!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayconstructor #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arraycreation
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Array(3) vs [,,,] Are NOT The Same!
Creating arrays in JavaScript has a hidden trap! Array(3) and [,,,] look identical but behave completely differently. Mind blown!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayconstructor #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arraycreation
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Array(3) vs [,,,] Are NOT The Same!
Creating arrays in JavaScript has a hidden trap! Array(3) and [,,,] look identical but behave completely differently. Mind blown!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayconstructor #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arraycreation
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Array(3) vs [,,,] Are NOT The Same!
Creating arrays in JavaScript has a hidden trap! Array(3) and [,,,] look identical but behave completely differently. Mind blown!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayconstructor #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arraycreation
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Array.from() With Sparse Arrays?!
Array.from() has hidden behavior with sparse arrays! Creating arrays this way creates something unexpected. Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #array.from #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arrayconversion
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Array.from() With Sparse Arrays?!
Array.from() has hidden behavior with sparse arrays! Creating arrays this way creates something unexpected. Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #array.from #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arrayconversion
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Array.from() With Sparse Arrays?!
Array.from() has hidden behavior with sparse arrays! Creating arrays this way creates something unexpected. Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #array.from #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arrayconversion
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Array.from() With Sparse Arrays?!
Array.from() has hidden behavior with sparse arrays! Creating arrays this way creates something unexpected. Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #array.from #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arrayconversion
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Array.from() With Sparse Arrays?!
Array.from() has hidden behavior with sparse arrays! Creating arrays this way creates something unexpected. Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #array.from #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #sparsearrays #javascriptwtf #arrayconversion
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"10" > "2" Is FALSE?!
JavaScript string comparison is backwards! Comparing "10" and "2" gives the WRONG answer. This breaks sorting! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #stringcomparison #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #lexicographic #javascriptwtf #comparisonbug
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"10" > "2" Is FALSE?!
JavaScript string comparison is backwards! Comparing "10" and "2" gives the WRONG answer. This breaks sorting! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #stringcomparison #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #lexicographic #javascriptwtf #comparisonbug
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"10" > "2" Is FALSE?!
JavaScript string comparison is backwards! Comparing "10" and "2" gives the WRONG answer. This breaks sorting! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #stringcomparison #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #lexicographic #javascriptwtf #comparisonbug
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"10" > "2" Is FALSE?!
JavaScript string comparison is backwards! Comparing "10" and "2" gives the WRONG answer. This breaks sorting! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #stringcomparison #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #lexicographic #javascriptwtf #comparisonbug
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"10" > "2" Is FALSE?!
JavaScript string comparison is backwards! Comparing "10" and "2" gives the WRONG answer. This breaks sorting! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #stringcomparison #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #lexicographic #javascriptwtf #comparisonbug
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Array Methods Work On Objects?!
JavaScript array methods work on objects that look like arrays! This is a hidden feature that will blow your mind! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #arraymethods #javascriptquiz #codingchallenge #javascriptshorts #javascriptweird #arraylikeobjects #javascriptwtf #prototypemethods
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Array Methods Work On Objects?!
JavaScript array methods work on objects that look like arrays! This is a hidden feature that will blow your mind! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #arraymethods #javascriptquiz #codingchallenge #javascriptshorts #javascriptweird #arraylikeobjects #javascriptwtf #prototypemethods
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Array Methods Work On Objects?!
JavaScript array methods work on objects that look like arrays! This is a hidden feature that will blow your mind! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #arraymethods #javascriptquiz #codingchallenge #javascriptshorts #javascriptweird #arraylikeobjects #javascriptwtf #prototypemethods
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Array Methods Work On Objects?!
JavaScript array methods work on objects that look like arrays! This is a hidden feature that will blow your mind! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #arraymethods #javascriptquiz #codingchallenge #javascriptshorts #javascriptweird #arraylikeobjects #javascriptwtf #prototypemethods
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Array Methods Work On Objects?!
JavaScript array methods work on objects that look like arrays! This is a hidden feature that will blow your mind! Watch this!
#javascript #javascripttricks #codingtips #programmingtutorial #arraymethods #javascriptquiz #codingchallenge #javascriptshorts #javascriptweird #arraylikeobjects #javascriptwtf #prototypemethods
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delete On Array Doesn't Remove It?!
Using delete on arrays creates holes instead of removing elements! Array length stays the same. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #deleteoperator #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #arrayholes #javascriptwtf #arraydeletion
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delete On Array Doesn't Remove It?!
Using delete on arrays creates holes instead of removing elements! Array length stays the same. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #deleteoperator #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #arrayholes #javascriptwtf #arraydeletion
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delete On Array Doesn't Remove It?!
Using delete on arrays creates holes instead of removing elements! Array length stays the same. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #deleteoperator #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #arrayholes #javascriptwtf #arraydeletion
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delete On Array Doesn't Remove It?!
Using delete on arrays creates holes instead of removing elements! Array length stays the same. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #deleteoperator #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #arrayholes #javascriptwtf #arraydeletion
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delete On Array Doesn't Remove It?!
Using delete on arrays creates holes instead of removing elements! Array length stays the same. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #deleteoperator #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #arrayholes #javascriptwtf #arraydeletion
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Math.max() With No Arguments?!
Calling Math.max() with nothing returns something you'd NEVER expect! This will break your logic! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #math.max #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathfunctions #javascriptwtf #edgecases
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Math.max() With No Arguments?!
Calling Math.max() with nothing returns something you'd NEVER expect! This will break your logic! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #math.max #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathfunctions #javascriptwtf #edgecases
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Math.max() With No Arguments?!
Calling Math.max() with nothing returns something you'd NEVER expect! This will break your logic! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #math.max #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathfunctions #javascriptwtf #edgecases
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Math.max() With No Arguments?!
Calling Math.max() with nothing returns something you'd NEVER expect! This will break your logic! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #math.max #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathfunctions #javascriptwtf #edgecases
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Math.max() With No Arguments?!
Calling Math.max() with nothing returns something you'd NEVER expect! This will break your logic! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #math.max #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathfunctions #javascriptwtf #edgecases
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[1,2,3] == [1,2,3] Is FALSE?!
JavaScript array comparison is broken! Two identical arrays are NOT equal. This is why your code fails! Watch the reveal!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayequality #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #comparison #javascriptwtf #equalitycheck
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[1,2,3] == [1,2,3] Is FALSE?!
JavaScript array comparison is broken! Two identical arrays are NOT equal. This is why your code fails! Watch the reveal!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayequality #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #comparison #javascriptwtf #equalitycheck
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[1,2,3] == [1,2,3] Is FALSE?!
JavaScript array comparison is broken! Two identical arrays are NOT equal. This is why your code fails! Watch the reveal!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayequality #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #comparison #javascriptwtf #equalitycheck
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[1,2,3] == [1,2,3] Is FALSE?!
JavaScript array comparison is broken! Two identical arrays are NOT equal. This is why your code fails! Watch the reveal!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayequality #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #comparison #javascriptwtf #equalitycheck
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[1,2,3] == [1,2,3] Is FALSE?!
JavaScript array comparison is broken! Two identical arrays are NOT equal. This is why your code fails! Watch the reveal!
#javascript #javascripttricks #codingtips #programmingtutorial #arrayequality #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #comparison #javascriptwtf #equalitycheck
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Object Keys Order Is INSANE!
JavaScript object key ordering will break your brain! Number keys vs string keys get sorted differently. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #objectkeys #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #propertyorder #javascriptwtf #objectbehavior
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Object Keys Order Is INSANE!
JavaScript object key ordering will break your brain! Number keys vs string keys get sorted differently. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #objectkeys #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #propertyorder #javascriptwtf #objectbehavior
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Object Keys Order Is INSANE!
JavaScript object key ordering will break your brain! Number keys vs string keys get sorted differently. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #objectkeys #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #propertyorder #javascriptwtf #objectbehavior
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Object Keys Order Is INSANE!
JavaScript object key ordering will break your brain! Number keys vs string keys get sorted differently. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #objectkeys #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #propertyorder #javascriptwtf #objectbehavior
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Object Keys Order Is INSANE!
JavaScript object key ordering will break your brain! Number keys vs string keys get sorted differently. This breaks everything! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #objectkeys #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #propertyorder #javascriptwtf #objectbehavior
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Object.is() vs === Are DIFFERENT?!
Object.is() and === are NOT the same! There's a hidden difference that will shock you. This breaks equality checks! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #object.is #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #equality #javascriptwtf #strictequality
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parseInt('08') Returns WHAT?!
JavaScript parseInt has a hidden trap! Leading zeros create unexpected results. This bug has broken production code. See what happens!
#javascript #javascripttricks #codingtips #programmingtutorial #parseint #numberparsing #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #octalnumbers #javascriptwtf
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Temporal Dead Zone Breaks Code!
JavaScript's Temporal Dead Zone will crash your code! Accessing let/const before declaration throws an error. Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #temporaldeadzone #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #hoisting #javascriptwtf #letconst
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Temporal Dead Zone Breaks Code!
JavaScript's Temporal Dead Zone will crash your code! Accessing let/const before declaration throws an error. Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #temporaldeadzone #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #hoisting #javascriptwtf #letconst
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Temporal Dead Zone Breaks Code!
JavaScript's Temporal Dead Zone will crash your code! Accessing let/const before declaration throws an error. Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #temporaldeadzone #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #hoisting #javascriptwtf #letconst
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Temporal Dead Zone Breaks Code!
JavaScript's Temporal Dead Zone will crash your code! Accessing let/const before declaration throws an error. Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #temporaldeadzone #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #hoisting #javascriptwtf #letconst
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Temporal Dead Zone Breaks Code!
JavaScript's Temporal Dead Zone will crash your code! Accessing let/const before declaration throws an error. Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #temporaldeadzone #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #hoisting #javascriptwtf #letconst
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Closure With setTimeout Creates Chaos!
Using var in loops with setTimeout creates a closure trap! All timeouts print the same value. This breaks async code! Watch!
#javascript #javascripttricks #codingtips #programmingtutorial #closures #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #settimeout #javascriptwtf #asyncclosures
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0.1 + 0.2 = 0.30000000000000004?!
JavaScript math is broken! Adding 0.1 + 0.2 creates a number that will shock you. This is why financial apps fail! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #floatingpoint #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathprecision #javascriptwtf #numberprecision
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0.1 + 0.2 = 0.30000000000000004?!
JavaScript math is broken! Adding 0.1 + 0.2 creates a number that will shock you. This is why financial apps fail! Watch the chaos!
#javascript #javascripttricks #codingtips #programmingtutorial #floatingpoint #javascriptquiz #codingchallenge #javascriptshorts #javascriptbugs #mathprecision #javascriptwtf #numberprecision