JavaScript program za primerjavo elementov dveh nizov

V tem primeru se boste naučili pisati program JavaScript, ki bo primerjal elemente dveh nizov.

Če želite razumeti ta primer, morate poznati naslednje teme programiranja JavaScript:

• JavaScript za zanko
• Array JavaScript
• Funkcije JavaScript in izrazi funkcij

Primer 1: Primerjava nizov z uporabo 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);

Izhod

 Nizi imajo enake elemente.

JSON.stringify()Postopek pretvori niz v niz JSON.

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

Nato se niz nizov primerjata z uporabo ==.

Primer 2: Primerjaj polja z uporabo zanke

 // 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);