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ループをゆっくり回す

Posted at

APIのリクエスト制限などで、ループをゆっくり回したいときに使う。


var request = require("request");


var list = ['東京駅', '高崎駅', '前橋駅'];


loop(list, geocoding, 2000); //2秒毎にループ

//ジオコード問合せ
function geocoding(address){
    var geocodeURI = 'http://maps.googleapis.com/maps/api/geocode/json?sensor=false&address=';
    var requrl = geocodeURI + encodeURI(address.toString("utf8"));
    request(requrl, function (error, response, body) {
      if (!error && response.statusCode == 200) {
        console.log(JSON.parse(body).results[0].geometry);
      }
    });
}

//ゆっくりループ
function loop(array, callback, interval){
    array.forEach(function(d, i){
        setTimeout(function(){
            callback(d);
        }, i * interval);
    });
}

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