从 0 开始的 Javascript 关联数组键

Question

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Answer 1

由于前导 0，您拥有一个 Javascript 对象而不是 Javascript 数组。 Javascript 对象没有顺序。它们是键->值映射。您可以将您的值转换为数字，然后改为使用稀疏数组:

var testArr = [];
testArr[+"0000"] = "00000 - COST CENTER - BALANCE SHEET";
testArr[+"0017"] = "0017 - Test Team";
testArr[+"00033"] = "00033 - Test Team ";
testArr[+"87210"] = "87210 - OFFICE OF THE PRESIDENT";

// Results in:

[
     0: "00000 - COST CENTER - BALANCE SHEET",
    17: "0017 - Test Team",
    33: "00033 - Test Team ",
 87210: "87210 - OFFICE OF THE PRESIDENT"
]

如果您需要维护前导的 '0'，或者如果您的键不一定总是数字，您应该改用对象数组:

var testArr = [];
testArr.push({id: "0000", name: "00000 - COST CENTER - BALANCE SHEET"});
testArr.push({id: "0017", name: "0017 - Test Team"});
testArr.push({id: "00033", name: "00033 - Test Team "});
testArr.push({id: "87210", name: "87210 - OFFICE OF THE PRESIDENT"});

然后您维护顺序并可以像这样按顺序循环:

for(var i = 0; i < testArr.length; i++){
    console.log(testArr[i].id + ': ' + testArr[i].name);
}