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Complete-Javascript

What is JavaScript?

  • JAVASCRIPT IS A HIGH-LEVEL PROTOTYPE-BASED OBJECT-ORIENTED MULTI-PARADIGM INTERPRETED OR JUST-IN-TIME COMPILED DYNAMIC SINGLE-THREADED GARBAGE-COLLECTED PROGRAMMING LANGUAGE WITH FIRST-CLASS FUNCTIONS AND A NON-BLOCKING EVENT LOOP CONCURRENCY MODEL. 🙂🙂🙂

Which array method to use? "I want..:"

To mutate original array A new array
Add to original: .push (end) .unshift (start) Computed from original: .map(loop)
Remove from original: .pop (end) .shift(start) .splice(any)Others: .reverse .sort .fill Filtered using condition: .filter, Portion of original: .slice Adding original to other .concat, Flattening the original: .flat, .flatMap
An Array index An array element
Based on value: .indexOf Based on test condition: .findIndex Based on test condition: .find
Know if array includes A new String
Based on value: .includes Based on test condition:.some, .every Based on separator string: .join
To transform to value To just loop array
Based on accumulator: .reduce (Boil down array to single value of any type: number, string, boolean, or even new array or object) Based on callback .forEach(Does not create a new array, just loops over it)

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