Ausführliche Erklärung und Beispielfreigabe der Usage_Javascript-Fähigkeiten von yepnope.js

yepnope({
 test : Modernizr.geolocation,
 yep : 'normal.js',
 nope : ['polyfill.js', 'wrapper.js']
});

yepnope([{
 test : /* boolean(ish) 输入条件    */,
 yep : /* array (of strings) | string - 条件为真时加载的资源 */,
 nope : /* array (of strings) | string - 条件为假时加载的资源 */,
 both : /* array (of strings) | string - 条件无论真假都加载 */,
 load : /* array (of strings) | string - 条件无论真假都加载 */,
 callback : /* function ( testResult, key ) | object { key : fn } 回调函数 */,
 complete : /* function 加载完成后执行的函数 */
}, ... ]);

yepnope([
 {
  load: 'http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js',
  complete: function () {
   if ( ! window.jQuery ) {
    yepnope( 'local/jquery.min.js' );
   }
  }
 },
 {
  load : 'jquery.plugin.js',
  complete: function () {
   jQuery(function () {
    jQuery( 'div' ).plugin();
   });
  }
 }
]);

someLoader('http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js', function(){
 if ( ! window.jQuery ) {
  someLoader( 'local/jquery.min.js', 'jquery.plugin.js' );
 /*注意这点和yepnope的区别，yepnope加载失败后仅需重新加载备用资源即可，不会影响依赖此资源的其他文件执行*/
 } else {
  someLoader( 'jquery.plugin.js' );
 }
});

yepnope( '/url/to/your/script.js' );

yepnope( {
   load : '/url/to/your/script.js'
   } );

yepnope( {
  test : window.JSON,
  load : '/url/to/your/script.js',
  callback : function ( url, result, key ) {
   // whenever this runs, your script has just executed.
   alert( 'script.js has loaded!' );
  }
 } );

yepnope( {
  test : window.JSON,
  nope : 'json2.js',
  complete : function () {
   var data = window.JSON.parse( '{ "json" : "string" }' );
  }
 } );

yepnope( {
  test : Modernizr.geolocation,
  yep : {
   'rstyles' : 'regular-styles.css'
  },
  nope : {
   'mstyles' : 'modified-styles.css',
   'geopoly' : 'geolocation-polyfill.js'
  },
  callback : function ( url, result, key ) {
   if ( key === 'geopoly' ) {
    alert( 'This is the geolocation polyfill!' );
   }
  }
 } );

yepnope( {
  test : Modernizr.geolocation,
  yep : {
   'rstyles' : 'regular-styles.css'
  },
  nope : {
   'mstyles' : 'modified-styles.css',
   'geopoly' : 'geolocation-polyfill.js'
  },
  callback : {
   'rstyles' : function ( url, result, key ) {
    alert( 'This is the regular styles!' );
   },
   'mstyles' : function ( url, result, key ) {
    alert( 'This is the modified styles!' );
   },
   'geopoly' : function ( url, result, key ) {
    alert( 'This is the geolocation polyfill!' );
   }
  },
  complete : function () {
   alert( 'Everything has loaded in this test object!' );
  }
 } );

yepnope( 'css!mystyles.php?version=1532' );

yepnope( {
 load : 'preload!jquery.1.5.0.js',
 callback : function ( url, result, key ) {
  window.jQuery; //undefined
  yepnope(jquery.1.5.0.js);
  window.jQuery; //object
 }
} );

yepnope({
 load: ['normal.js', 'ie6!ie7!ie-patch.js'] // ie6 or ie7 only (on patch)
});