「インシデント」が見つかるたびに関数内で繰り返されるグローバル変数nrOfFoundIncidentsを宣言しています。ただし、関数が実行された後、関数の外部で宣言されていても、変数は再び空になります。
それはなぜですか、そして私はそれについて何ができますか?
var INCIDENT_MATCHES = {
trafficAccidents: /(traffic|car) accident|/
robberies: /...
...you get it.
};
// theIncidents[0] = "There was a robbery on the 52th street last nigth...";
// theIncidents[1] = "Two days ago a car crashed into a house...";
// theIncidents[2] = "One person got stabbed outside his home...";
... and so on...
var nrOfFoundIncidents = 0;
function FindIncidents(incidentReports) {
var incidentCounts = {};
var incidentTypes = Object.keys(INCIDENT_MATCHES);
incidentReports.forEach(function(incident) {
incidentTypes.forEach(function(type) {
if(typeof incidentCounts[type] === 'undefined') {
incidentCounts[type] = 0;
}
var matchFound = incident.match(INCIDENT_MATCHES[type]);
if(matchFound){
var matchFound = incident.match(INCIDENT_MATCHES[type]);
nrOfFoundIncidents += 1;
console.log(nrOfFoundIncidents); // 1, 2, 3, 4, 5, 6, 7...
}
});
});
return incidentCounts; // <- returns as it supposed
}
var objectOfIncidents = FindIncidents(theIncidents); <-- as an argument an object containing of categories with reg exp to find them in the text that is searched is provied.
console.log(nrOfFoundIncidents); // <--- 0
編集:関連情報を除外するリスクがあるため、残りのコードで関数を更新しました。