KO数组绑定不适用？

Question

您好我似乎有与KO阵列绑定不适用的问题。这里是我的代码：

var movements_array = []; 
var viewModel = { 
    movements: ko.observableArray(movements_array), 
}; 
$(document).ready(function(){ 
    ko.applyBindings(viewModel); 
}); 

function get_alteration_movement(){ 

    for(var i = 0; i < index.movements.length; i++) 
    { 
     movements_array[i] = index.movements[i].description; 
     console.log(movements_array); 

     viewModel.movements(movements_array); 
     console.log(viewModel.movements); 
    } 

} 

指数是JSON数据从另一个JS网页牵强。

Answer 1

至于我，我通常使用的功能，而不是对象常量，它更清晰： Difference between knockout View Models declared as object literals vs functions

var viewModel = function(){ 
    this.movements = ko.observableArray([]); 
}; 

$(document).ready(function() { 
    var model = new viewModel(); 
    ko.applyBindings(model); 
    get_alteration_movement(model); 
}); 

function get_alteration_movement(model) { 
    var movements_array = []; 
    for (var i = 0; i < index.movements.length; i++) { 
     movements_array[i] = index.movements[i].description; 
     console.log(movements_array); 
    } 

    model.movements(movements_array); 
}