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- function getExtension(fileName) {
- var ret;
- if (!fileName) {
- return ret;
- }
- var fileTypes = fileName.split(".");
- var len = fileTypes.length;
- if (len === 0) {
- return ret;
- }
- ret = fileTypes[len - 1];
- return ret;
- }
- function IsTxtFile(fileName) {
- var Extension = getExtension(fileName);
- if (Extension.toLowerCase() === "txt") {
- alert("テキストファイルです");
- }
- else {
- alert("テキストファイルではありません。");
- }
- }
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