[英]count variable not iterating through for loops
嘿,我每次嘗試通過if語句成功循環時,都會嘗試增加此變量num_pass的計數。 它一直吐出0或1。
我曾嘗試將變量放置在許多不同的地方並在不同的地方聲明它,但仍然沒有成功。
function pickup()
{
var num_pass = 0;
var i;
var array = PASSENGERS[i];
for (var i = 0; i < PASSENGERS.length; i++)
{
// get location of passengers
var lat = PASSENGERS[i].placemark.getGeometry().getLatitude();
var long = PASSENGERS[i].placemark.getGeometry().getLongitude();
// calculate distance of passengers to bus
var distance = shuttle.distance(lat, long);
// screen for freshman
// if passengers are close enough
if (distance <= 15)
{
// if there is room on the bus
// iterate through all the seats
var j;
var array = shuttle.seats;
for (j = 0;j < shuttle.seats.length;j++)
{
// if a seat is empty
if (shuttle.seats[j] == null && PASSENGERS[i].house != "Thayer Hall")
{
// remove picture from the 3-D map
var features = earth.getFeatures();
features.removeChild(PASSENGERS[i].placemark);
// remove marker from the 2-D map
PASSENGERS[i].marker.setMap(null);
// remove 2-D map attribute of passenger
PASSENGERS[i].marker = null;
// add to the shuttle
shuttle.seats[j] = PASSENGERS[i];
// update the chart
chart();
$('#announcements').html("Passenger picked up!");
$('#announcements').html("Score: " + score);
num_pass++;
}
console.log(shuttle.seats[j]);
}
}
else if (num_pass > 9)
{
$('#announcements').html("no room on bus");
}
else if (distance > 15)
{
$('#announcements').html("no passenger nearby");
}
}
這應該工作:
for (j = 0; j < shuttle.seats.length; j++) {
// if a seat is empty
if (shuttle.seats[j] == null && PASSENGERS[i].house != "Thayer Hall") {
// remove picture from the 3-D map
var features = earth.getFeatures();
features.removeChild(PASSENGERS[i].placemark);
// remove marker from the 2-D map
PASSENGERS[i].marker.setMap(null);
// remove 2-D map attribute of passenger
PASSENGERS[i].marker = null;
// add to the shuttle
shuttle.seats[j] = PASSENGERS[i];
// update the chart
chart();
$('#announcements').html("Passenger picked up!");
$('#announcements').html("Score: " + score);
num_pass++;
// @lukpaw explanation: Code below was unnecessary
//}
console.log(shuttle.seats[j]);
// @lukpaw explanation: Code below was unnecessary
//}
}
else if (num_pass > 9) {
$('#announcements').html("no room on bus");
} else if (distance > 15) {
$('#announcements').html("no passenger nearby");
}
}
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