27-3a.js

来自「java应用代码和章节代码。各种功能实现效果。很值」· JavaScript 代码 · 共 12 行

// Pass "<type>/<subtype>" string to this function to find
// out if the MIME type is registered with this browser
// and that at least some plug-in is enabled for that type.
function mimeIsReady(mime_type) {
 if (navigator.mimeTypes[mime_type]) {
  if (navigator.mimeTypes[mime_type].enabledPlugin) {
   return true;
  }
 }
 return false;
}