web.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.webServer>
  <rewrite>
    <rules>
      <rule name="Angular Routes" stopProcessing="true">
        <match url=".*" />
        <conditions logicalGrouping="MatchAll">
          <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
          <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
        </conditions>
        <action type="Rewrite" url="/angular-demos/" />
      </rule>
    </rules>
  </rewrite>
  <staticContent>
    <mimeMap fileExtension=".json" mimeType="application/json;charset=UTF-8;" />
  </staticContent>
</system.webServer>
</configuration>