🎈(
Size: a a a
🎈(
j
N
const arr= [1,2,3];
const result = arr[0] || 0;
const result2 = arr[999] || 0;
console.log(result, 'arr[0] существует')
console.log(result2, 'arr[999] не существует')
🎈(
МD
if (navigator.userAgent.match(/(iPad|iPhone|iPod)/g)) {
alert('Ios');
} else {
alert('Android');
}
N
N
МD
МD
j
МD
var iOS = !window.MSStream && /iPad|iPhone|iPod/.test(navigator.userAgent);
МD
И
j
И
VI
L
VI
L