javascript 检查对象是否包含具有值的属性
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check if object contains properties with value
提问by Dementic
i have the following array:
我有以下数组：
SoftwareBadges =
[
{ Title: "Playtech", Guid: "7e9", xPos: "96" },
{ Title: "BetSoft", Guid: "890", xPos: "169" },
{ Title: "WagerWorks", Guid: "35c", xPos: "242" },
{ Title: "Rival", Guid: "c35", xPos: "314" },
{ Title: "NetEnt", Guid: "59e", xPos: "387" },
{ Title: "MicroGaming", Guid: "19a", xPos: "460" },
{ Title: "Cayetano", Guid: "155", xPos: "533" },
{ Title: "OpenBet", Guid: "cfe", xPos: "607" },
{ Title: "RTG", Guid: "4e6", xPos: "680" },
{ Title: "Cryptologic", Guid: "05d", xPos: "753" },
{ Title: "CTXM", Guid: "51d", xPos: "827" },
{ Title: "Sheriff", Guid: "63e", xPos: "898" },
{ Title: "Vegas Tech", Guid: "a50", xPos: "975" },
{ Title: "Top Game", Guid: "0d0", xPos: "1048" },
{ Title: "Party Gaming", Guid: "46d", xPos: "1121" }
]
now, i need to check if on of them contains a value, and return the object for example:
现在，我需要检查它们中是否包含一个值，并返回对象，例如：
var test = "7e9" // Guid
how do i get the object that contains this Guid value ?
in the sample , it should return the PlayTechObject.
如何获取包含此 Guid 值的对象？在示例中，它应该返回PlayTech对象。
in C# using linq i could do something like:
var x = SoftwareBadges.Where(c => c.Guid == test)
在 C# 中使用 linq 我可以执行以下操作：
var x = SoftwareBadges.Where(c => c.Guid == test)
how can i do this in javascript ?
我怎样才能在 javascript 中做到这一点？
回答by ciccioska
As associative array you can try this:
作为关联数组，您可以尝试以下操作：
for (var s in SoftwareBadges) {
if (SoftwareBadges[s]["Guid"] == "7e9")
alert(SoftwareBadges[s]["Title"]);
}
回答by qiao
Array#filtermay come handy
Array#filter可能会派上用场
(SoftwareBadges.filter(function(v) {
return v['Guid'] == '7e9';
}))[0]
Note that filteris a part of ECMA5 and may not be available in some browsers.
请注意，它filter是 ECMA5 的一部分，在某些浏览器中可能不可用。
You may see https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/filterfor detailed document.
您可以查看https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/filter了解详细文档。
