check if an array "includes" an item in Javascript
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How to determine equality for two JavaScript objects?
67428
How do I determine whether an array contains a particular value in Java?
29314
Check whether an array is a subset of another
17040
Check if an array is empty or exists
48402
Javascript - remove an array item by value
156588
Test if a string contains any of the strings from an array
83478
Check if a "run-time" multidimensional array key exists
37735
How can I check for "undefined" in JavaScript?
88394
Check if one list contains element from the other
64289
How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method call?
96246
What's quicker and better to determine if an array key exists in PHP?
135561
How could I manipulate this array in Javascript for this kind of error checking?
22337
How to test if a list contains another list?
157279
How do you check if a variable is an array in JavaScript?
58046
How to check whether a string contains a substring in JavaScript?
63433
Search an array for a matching string
118108
Check if a Python list item contains a string inside another string