feat:提交

tests/dev1/dataHandle/common/file.ts

@@ -0,0 +1,22 @@
+export async function readText(file: Blob, encoding?: string): Promise<string>
+{
+  return new Promise((resolve) =>
+  {
+    let fileReader = new FileReader()
+    fileReader.onload = function (e)
+    {
+      resolve(<string> this.result)
+    }
+    fileReader.readAsText(file, encoding)
+  })
+}
+
+export function getFileExt(name: string)
+{
+  let index = name.lastIndexOf('.')
+  if (index != -1)
+  {
+    return name.substring(index + 1, name.length)
+  }
+  return null
+}