我将一些日期放入一个数组中,并希望该数组中有第二个“层”保存与该日期关联的订单号。它似乎工作正常,但是当我在chrome控制台中打印出数组时,我只看到第一个日期数组。如果我手动访问console.log(dateArray[1]['order_number']);
,我会看到预期的信息。我没有正确构建这个数组吗?
谢谢!
for ( var u in valuesArr ) {
//store the text seperator between the information and the order it is associated with
var sep = "?order_num=";
//store the string from which the information and order number will be extracted
var str = valuesArr[u];
//location of seperator
var start = str.indexOf("?order_num=");
var order_number = str.substring(start+sep.length);
var current_date = valuesArr[u].substring(0, start);
//date goes into "current_date" array
current_date = current_date.split(" / ");
//fashion it into a javascript date
//month needs one subtracted
dateArray[u] = new Date ( current_date[2], current_date[0]-1, current_date[1]);
/*
*to identify from which order this date derives, an order_number slot is created
*underneath the sorted date slot
*this is done so that when the html is reformatted to re-order the dates
*the content associated with this date can be 'brought along with' it
*as the its parent div's id contains the order number
*/
dateArray[u]['order_number'] = order_number;
}
console.log(dateArray)//only outputs the array of dates
console.log(dateArray[1]['order_number']);//outputs the order number
答案 0 :(得分:2)
您正在使用dateArray[u]['order_number'] = order_number;
执行的操作是向Date对象添加属性,而不是向数组添加元素。
要向阵列添加元素,请使用:
dateArray[u][1] = order_number;
答案 1 :(得分:2)
不要隐含地信任开发人员控制台。没有“正确”的打印,因为没有标准。
如果Chrome决定不在对象上显示自定义属性,则由Chrome决定。 只要您的值显示在那里并进行明确的测试,那就非常重要。
FWIW,你可以用......获得更理想的结果。
console.dir(dateArray)
console.dir
方法将为您提供可扩展对象,以便您可以向下钻取并查看自定义属性。
答案 2 :(得分:0)
如果valuesArr
是一个数组,那么使用for (... in ...)
将失败,因为这会执行对象迭代,因此会抓取数组中的许多其他元素,如{{1 },length
等等。
请尝试使用传统的indexOf
循环:
for