Sifa length

Sifa length inakuwezesha kujua na kuweka urefu wa safu.

Muundo

javascriptsafu.length;

Mfano

Wacha tuonyeshe urefu wa safu arr:

javascriptlet arr = ['a', 'b', 'c', 'd', 'e'];
console.log(arr.length);

Matokeo ya utekelezaji wa kodi:

javascript5

Mfano

Wacha tupunguze safu hadi vitu 2:

javascriptlet arr = ['a', 'b', 'c', 'd', 'e'];
arr.length = 2;

console.log(arr);

Matokeo ya utekelezaji wa kodi:

javascript['a', 'b']

Angalia pia