Javascript调用循环中的函数

Question

我需要在for循环中调用一个函数。我设法编写了一个闭包函数。但它不适合我。请帮忙解决这个问题。非常感谢您的帮助。

for(var i = 0; i < pointsData.length; i++){
    (function(foo){
        routeId = pointsData[i]._id;
        colorId = pointsData[foo].route_color;
        console.log('color start', colorId);
        $.post('commands.php',{command: 'get-route-coords',id: pointsData[foo]._id}
            ,function(data){              
                MYMAP.setAllRoutes(last, coordinates, pointsData[foo].route_color);
            });                         
    }(i));
}
MYMAP.setAllRoutes = function(center,flightPlanCoordinates,colorId) {
    console.log('color ids', colorId);
}

Answer 1

为什么不直接在循环中运行代码，如下所示。这个要求的原因是什么？

for(var i = 0; i < pointsData.length; i++){ 
    routeId = pointsData[i]._id;
    colorId = pointsData[foo].route_color;
    console.log('color start', colorId);
    $.post('commands.php',{command: 'get-route-coords',id: pointsData[foo]._id} ,function(data){              
        MYMAP.setAllRoutes(last, coordinates, pointsData[foo].route_color);
    });  
}

MYMAP.setAllRoutes = function(center,flightPlanCoordinates,colorId) {
    console.log('color ids', colorId);
}