Question

该对象用于更改日志，并以这种方式编写：

{
      header: version,
      features: ["features"], // array with all the features (if there are any)
      bugfixes: ["bugfixes"], // same for the bugfixes
      other: ["other changes"] // there can be other types in the object
    };

此对象需要填充此数组中的信息：

["[3.0.0]", "Features", "changes done in file", "Bug Fixes", "fixed home"],
["[2.0.1]", "Bug Fixes", "fixed login"], 
["[2.0.0]","Features", "added home", "added footer", "Bug Fixes", "fixed login", "Breaking", "added a breaking change"]

可以有多个功能，多个错误修正以及其他类型的标题，例如breaking。我想将这些数组添加到对象中，使每个版本的最终结果看起来像这样：

{
      header: "3.0.0",
      features: ["changes done in file"],
      bugfixes: ["bugfixes"],
    };

Answer 1

编辑：如果更改始终以小写字母记录，则可以避免原始答案中的键：

let generateLog = changes => {
    let _key;
    return changes.reduce((log, entry, idx) => {
        if (idx === 0) {
            log.header = entry.slice(1, -1);
        } else {
            let charCode = entry.charCodeAt(0);
            let isKey = charCode >= 65 && charCode <= 90;
            if (isKey) {
                let _value = entry.split(' ').join('').toLowerCase();
                if (!Array.isArray(log[_value])) {
                    log[_value] = [];
                }
                _key = _value;
            } else {
                log[_key].push(entry);           
            }
        }
        return log;
    }, {});
}

JsFiddle：http://jsfiddle.net/y564xewm/2/

有很多方法可以解决这个问题。我发现为更新日志对象维护一个“键”映射是最简单的。如何处理该地图取决于您（您可以使用1：1数组映射，如：stringKeys = [a, b, c]; objKeys = [x, y, z]）。

一旦定义了密钥，就需要在循环数组时查找密钥并将密钥应用于更改日志对象。您需要为下一个数组迭代维护该键，然后将值推送到数组。

遇到下一个键时，只需重复上一个键。

JSFiddle：http://jsfiddle.net/y564xewm/

解决方案：

// Register Change Log Keys
const CHANGE_LOG_KEYS = new Map();

// Key is response in array, Value is key assigned in object
// Adding a new key, like "Breaking" would be:
// CHANGE_LOG_KEYS.set('Breaking', 'breaking');
// Assuming response: [[x.x.x], 'Breaking', '...']

CHANGE_LOG_KEYS.set('Features', 'features');
CHANGE_LOG_KEYS.set('Bug Fixes', 'bugfixes');

let generateLog = changes => {
    let _key;
    return changes.reduce((log, entry, idx) => {
        if (idx === 0) {
            log.header = entry.slice(1, -1);
        } else {
            let value = CHANGE_LOG_KEYS.get(entry);
            if (value) {
                if (!Array.isArray(log[value])) {
                    log[value] = [];
                }
                _key = value;
            } else {
                log[_key].push(entry);
            }
        }
        return log;
    }, {});
}

let changes = [
    ["[3.0.0]", "Features", "changes done in file", "Bug Fixes", "fixed home"],
    ["[2.0.1]", "Bug Fixes", "fixed login"], 
    ["[2.0.0]","Features", "added home", "added footer", "Bug Fixes", "fixed login", "Breaking", "added a breaking change"]
];

changes.forEach(change => {
    console.log(generateLog(change));
});

以某种方式将Array字符串添加到Object

1 个答案: