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Chromeなどでデバッグするときにconsole.logを埋め込んでしまうが, InternetExplorerでは, Console APIに対応していないので, エラーになってしまう.
そこで, console.logに対応していない場合は, ロード時にとりあえずconsoleオブジェクトとconsole.log関数を生成してエラーにはしないようにする.

(function () {
    if (typeof window.console === "undefined") {
         window.console = {}
    if (typeof window.console.log !== "function") {
         window.console.log = function () {}
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