如何将字符串解析为哈希表

本文介绍了如何将字符串解析为哈希表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

是否有一种简单的方法(甚至是简单的命令)，即可从包含键值对并由给定分隔符分隔的字符串中构建哈希表(关联数组，JSON等).

Is there an easy (maybe even single and simple command) way to build a hashtable (associative array, JSON - whatever) from a string that includes key-value pairs, separated by a given delimiter.

示例:

n1=v1&n2=v2&n3=v3(其中&是分隔符)应该返回:[{n1:v1}, {n2:v2}, {n3:v3}]

n1=v1&n2=v2&n3=v3 (where & is a delimiter)should return: [{n1:v1}, {n2:v2}, {n3:v3}]

示例2 :

n1=v1;n2=v2;n3=v3(其中;是分隔符)

谢谢！

推荐答案

以下内容将以非常基本的方式进行操作，并检查每种情况下的键都不为空.所有值都是字符串.

The following will do it in a pretty basic way and does a check that the key in each case is not empty. All values will be strings.

function parse(str, separator) {
    var parsed = {};
    var pairs = str.split(separator);
    for (var i = 0, len = pairs.length, keyVal; i < len; ++i) {
        keyVal = pairs[i].split("=");
        if (keyVal[0]) {
            parsed[keyVal[0]] = keyVal[1];
        }
    }
    return parsed;
}

示例:

var props = parse("n1=v1&n2=v2&n3=v3", "&");
alert(props.n2); // Alerts v2

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