我们怎么可以过滤用JavaScript数组与正则表达式元素数组？ [英] how can we filter elements in array with regex in array with javascript?

问题描述

让我们说我有两个数组：一个是正则表达式，另一种是输入。那么，什么是最好的方式 - 在性能和可读性方面 - 做类似的东西输出

Let's say I have two arrays: one is the regex and the other one is the input. What, then, is the best way - in terms of performance and readability - to do something like the output?

var regex = [
    '/rat/',
    '/cat/'
    '/dog/',
    '/[1-9]/'
]

var texts = [
    'the dog is hiding',
    'cat',
    'human',
    '1'
]

最终的结果是

result = [
    'human'
]

那么，我在想是做类似减少：

// loop by text
for (var i = texts.length - 1; i >= 0; i--) {
    // loop by regex
    texts[i] = regex.reduce(function (previousValue, currentValue) {
        var filterbyRegex = new RegExp("\\b" + currentValue + "\\b", "g");  
        if (previousValue.toLowerCase().match(filterbyRegex)) {
            delete texts[i];
        };
        return previousValue;
    }, texts[i]);
}

不过，是不是可读？也许有，我没有想到的另一种方式。

But, is that not readable? Maybe there is another way that I haven't thought of.

推荐答案

我可能会是这样的。

var regexs = [
    /rat/i,
    /cat/i,
    /dog/i,
    /[1-9]/i
]

var texts = [
    'the dog is hiding',
    'cat',
    'human',
    '1'
]

var goodStuff = texts.filter(function (text) {
    return !regexs.some(function (regex) {
         return regex.test(text);
    });
});

但实际上，性能差异是如此的微不足道的，除非你正在做10000次。

But realistically, performance differences are so negligible here unless you are doing it 10,000 times.

请注意，这里使用ES5的方法，这很容易shimmable（我做了我所知道的单词）

Please note that this uses ES5 methods, which are easily shimmable (I made up a word I know)

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