在检查每个键、值对 Javascript 的同时遍历 Hashtable
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Iterate thru Hashtable while checking each key, value pair Javascript
提问by Psyllex
Possible Duplicate:
How do I enumerate the properties of a javascript object?
可能的重复：
如何枚举 javascript 对象的属性？
I"m trying to iterate thru a hashtable. But I need to check the values each time I run through it.
我正在尝试遍历哈希表。但每次运行时我都需要检查这些值。
How would I use a foreach table to do this? in sudo code I'd like to do this:
我将如何使用 foreach 表来做到这一点？在 sudo 代码中，我想这样做：
var tHash = {
name: n,
date: d,
labels: l,
}
foreach(value in tHash){
if(tHash.name== somevalue){do something};
if(tHash.label == somevalue) {do something};
That's essentially what I'd like to do but not real sure how to start it out.
这基本上就是我想做的，但不确定如何开始。
Edit: The isn't just one hash it's an array of hashes...I should've mentioned that at the beginning the way I put the code is the way I was loading the array of hashes with a for loop.
编辑：这不仅仅是一个散列，它是一个散列数组......我应该在开始时提到我放置代码的方式是我使用 for 循环加载散列数组的方式。
回答by pce
You can iterate through the Keys of a Hashobject with a for ... inLoop.
You get each property (key) of the Hash and can also access the Value with the property.
您可以使用循环遍历 Hashobject 的键for ... in。您可以获得哈希的每个属性（键），还可以使用该属性访问值。
var tHash = {
name: "n",
date: "d",
labels: "l"
}
for (var key in tHash){
console.log(key + " -> " + tHash[key]));
// if (key == "name") doSomething();
}
回答by Jeremy J Starcher
This works, as is.
这有效。
var tHash = {
name: "Jeremy",
date: "0",
labels: 4
}
if (tHash.name === "Jeremy") {alert("Welcome, Master")};
if (tHash.labels !== 0) {alert("There is a label waiting")};
