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我有這樣的方法:javascript錯誤:periodLookup [periodStr]未定義,爲什麼它會拋出此錯誤?
set_period_help_text: function(periodInput){
var metric = MonitorMetric.getSelectedMetric();
var periodStr = $('select[name=metric_period]').val();
var datapoints = Number(periodInput.attr("value"));
var period = datapoints * periodLookup[periodStr][0];
}
var periodLookup = {
"OneMinute": [1, "minute"],
"FiveMinute": [5, "minute"],
"OneHour": [1, "hour"],
"OneDay": [1, "day"],
"OneWeek": [1, "week"]
};
其中var periodStr正在從下拉menue,只有擁有值retrived:
"OneMinute"
"FiveMinute"
"OneHour"
"OneDay"
"OneWeek"
我得到一個Java腳本錯誤時的頁面加載:
periodLookup [periodStr]未定義 [Break on this error] var period = datapoints * periodLookup [periodStr] [0];
我認爲這是它正在運行的代碼,而它試圖檢索的值仍然沒有加載。 – 2010-06-11 13:55:09