var arr = ["America","Greece", "Britain", "Canade", "China", "Egypt"];
var count = 0;
for(var i in arr) {
if (arr[i].indexOf("a") != -1 || arr[i].indexOf("A") != -1) {
count++
}
}
alert(count); // 4
var arr = ["America","Greece", "Britain", "Canade", "China", "Egypt"];
var count = 0;
for(var i in arr) {
if (arr[i].indexOf("a") != -1 || arr[i].indexOf("A") != -1) {
count++
}
}
alert(count); // 4