JavaScript program za usporedbu elemenata dvaju nizova

U ovom ćete primjeru naučiti pisati JavaScript program koji će uspoređivati ​​elemente dva polja.

Da biste razumjeli ovaj primjer, trebali biste imati znanje o sljedećim temama programiranja JavaScript:

• JavaScript za petlju
• JavaScript niz
• JavaScript funkcija i izrazi funkcija

Primjer 1: Usporedite nizove pomoću JSON.stringify ()

 // program to compare two arrays function compareArrays(arr1, arr2) ( // compare arrays const result = JSON.stringify(arr1) == JSON.stringify(arr2) // if result is true if(result) ( console.log('The arrays have the same elements.'); ) else ( console.log('The arrays have different elements.'); ) ) const array1 = (1, 3, 5, 8); const array2 = (1, 3, 5, 8); compareArrays(array1, array2);

Izlaz

 Nizovi imaju iste elemente.

JSON.stringify()Način pretvara u niz u JSON niza.

 JSON.stringify((1, 3, 5, 8)); // "(1,3,5,8)"

Zatim se uspoređuju dva niza niza pomoću ==.

Primjer 2: Usporedite nizove pomoću for Loop

 // program to extract value as an array from an array of objects function compareArrays(arr1, arr2) ( // check the length if(arr1.length != arr2.length) ( return false; ) else ( let result = false; // comparing each element of array for(let i=0; i 

Output

 The arrays have the same elements.

In the above program,

The length of the array elements are compared using the length property. If both arrays have different lengths, false is returned.

Else,

• The for loop is used to iterate through all the elements of the first array.
• During each iteration, elements of the first array are compared to corresponding elements of the second array.

   arr1(i) != arr2(i)

• If the corresponding array elements of both arrays are not equal, false is returned and the loop terminates.
• If all elements are equal, true is returned.

 array1 = (1, (a : 2), 3, 5);