在JavaScript中按给定条件读取对象数组和输出值

Question

问题在于：

客户希望购买两台同名电脑，颜色为白色或黑色，总价格低于1600.编写一个JavaScript程序，读取给定的数组var pcs，并找到他最好的报价。

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var pcs = [
	{ "model":"lenovo", "price":1234, "color":{"red":1,"green":2} },
	{ "model":"hp", "price":800, "color":{"black":2,"yellow":0} },
	{ "model":"toshiba", "price":256, "color":{"mėlyna":3,"green":1} },
	{ "model":"dell", "price":697, "color":{"black":1,"white":2} },
	{ "model":"acer", "price":620, "color":{"black":4,"white":2} },
	{ "model":"apple", "price":2560, "color":{"white":3,"black":1} },
	{ "model":"asus", "price":1001, "color":{"black":2,"yellow":3} }
],
    PC,
    Collors,
    offer = "Offers: " + "\n";

for (var i = 0; i < pcs.length; i++) {
    PC = pcs[i]; 
    Collors = Object.keys(PC.color);

    if ((((PC.price) * 2) <= 1600) && (PC.color.black >= 2 || PC.color.white >= 2)) {

        for ( var j = 0; j < Collors.length; j++) {
            
        
            if ((PC.color.black >= 2) && (PC.color.white >= 2)) {

            offer += "\n" + "model: " + PC.model + "\n" + "price: " + (PC.price) * 2 + "\n"
            + "Collors: " + Collors[0] + " and " + Collors[1] + "\n"; 
            }

            else if (((PC.color.black >= 2) && (Collors[j] === "black"))) {

            offer += "\n" + "model: " + PC.model + "\n" + "price: " + (PC.price) * 2 + "\n"
                + "Collors: " + Collors[j] + "\n";      
            }

            else if (((PC.color.white >= 2) && (Collors[j] === "white"))) {

            offer += "\n" + "model: " + PC.model + "\n" + "price: " + (PC.price) * 2 + "\n"
            + "Collors: " + Collors[j] + "\n"; 
            }
        }
    } 
}

console.log(offer);

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书面代码找到最好的报价，但是有人可以告诉输出中为什么acer重复自身以及如何修复它？

非常感谢所有人的帮助，

Answer 1

你循环<StackPanel> <wpfDemos:FolderPicker Title="Source" FullPath="{Binding Path=Src}" /> <wpfDemos:FolderPicker Title="Destination" FullPath="{Binding Path=Target}"/> </StackPanel> 。对于Collors，acer和black都有white。因此，检查>2的第一条规则与black and white匹配一次，black匹配一次。

解决方案是不要遍历white，而是直接单独检查Collors和black：

white

Answer 2

解决问题以在控制台中获取所需输出的代码。

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var pcs = [
	{ "model":"lenovo", "price":1234, "color":{"red":1,"green":2} },
	{ "model":"hp", "price":800, "color":{"black":2,"yellow":0} },
	{ "model":"toshiba", "price":256, "color":{"mėlyna":3,"green":1} },
	{ "model":"dell", "price":697, "color":{"black":1,"white":2} },
	{ "model":"acer", "price":620, "color":{"black":4,"white":2} },
	{ "model":"apple", "price":2560, "color":{"white":3,"black":1} },
	{ "model":"asus", "price":1001, "color":{"black":2,"yellow":3} }
];





for (var i=0; i < pcs.length; i++) {

    if((pcs[i].color.black >=2 || pcs[i].color.white >=2) && pcs[i].price *2 <=1600){
       //console.log (pcs[i]);
        
        var colors = Object.keys(pcs[i].color),
            color = '';
        for(var j = 0; j < colors.length; j++){
            
            if ((pcs[i].color.black >= 2 && colors[j] === "black") ||
                (pcs[i].color.white >= 2 && colors[j] === "white" )) {
                
                
                if (color.length > 0) {
                    color += ' and ' + colors[j];
                    } else {
                            color = colors[j];
                    }
                
                }
        }
        
        
        console.log('Model: ' + pcs[i].model + '\nPrice: ' + pcs[i].price*2 + '\nSpalvos: ' + color);
        
        
    }
}

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