Question

How to use callback function that check if every element in array pass a condition with Array.every() in JavaScript

Answer 1

function isBigThen100(element, index, array) {
  return element >= 100;
}

var arr = [101, 234, 834, 9812]

if (arr.every(isBigThen100))
    document.write("yes");
else
    document.write("no");
 
/*
run:  

yes 
 
*/

 

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Answer 2

function isBigThen100(element, index, array) {
  return element >= 100;
}

var arr = [101, 90, 834, 712]

if (arr.every(isBigThen100))
    document.write("yes");
else
    document.write("no");
 
/*
run:  

no 
 
*/

 

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Answer 3

var arr = [101, 4730, 834, 712]

if (arr.every(element => element >= 100))
    document.write("yes");
else
    document.write("no");
 
/*
run:  

yes  
 
*/

 

70+ SQL courses for beginners and professionals