Tea.context(function () { this.$delay(function () { let that = this teaweb.datepicker("day-input", function (day) { that.day = day }) }) let that = this this.accessLogs.forEach(function (accessLog) { if (typeof (that.regions[accessLog.remoteAddr]) == "string") { accessLog.region = that.regions[accessLog.remoteAddr] } else { accessLog.region = "" } }) })