Highcharts用函数动态填充静态值

series: [{                                                              
                name: ‘Random data‘,                                                
                data: (function() {                                                 
                    // generate an array of random data                             
                    var data = [],                                                  
                        time = (new Date()).getTime(),                              
                        i;                                                          
                                                                                    
                    for (i = -19; i <= 0; i++) {                                    
                        data.push({                                                 
                            x: time + i * 1000,                                     
                            y: Math.random()                                        
                        });                                                         
                    }                                                               
                    return data;                                                    
                })()                                                                
            }]