Why does this happen when the for in loop is used in Javascript?
78
Why is using "for...in" for array iteration a bad idea?
145985
What is the advantage of initializing multiple javascript variables with the same var keyword?
68074
JavaScript 'in' operator for `undefined` elements in Arrays
2029
Elements order in a "for (… in …)" loop
67916
Why is it bad to use an iteration variable in a lambda expression
117657
Why does javascript accept commas in if statements?
73546
Iterating over array of objects javascript - odd behaviour?
143969
Strange behavior when iterating over HTMLCollection from getElementsByClassName
88186
Post-increment and pre-increment within a 'for' loop produce same output
76392
PHP in_array() / array_search() odd behaviour
31256
Why the behavior of while loop and for loop is different?
66801
closure in for-loop > different tries failed
12242
How does string equality work in JavaScript?
16754
Can I bind an array to an IN() condition?
144960
Why is Javascript's "in" operator consistently slower than strict member comparison to undefined?
29106
Variable appears to change size on every loop iteration - what?
54546
How does the enhanced for statement work for arrays, and how to get an iterator for an array?