PHP函数到Javascript：扫描字符串并在数组中添加单词

Im trying to convert this php function to javascript:

我试图将这个PHP函数转换为javascript：

function sanitize_words($string,$limit=false) {
    preg_match_all("/\p{L}[\p{L}\p{Mn}\p{Pd}'\x{2019}]{1,}/u",$string,$matches,PREG_PATTERN_ORDER);
    return $matches[0];
}

Basically, it takes this string:

基本上，它需要这个字符串：

$string = "Why hello, how are you?"
$array = sanitize_words($string);

And converts it into an array:

并将其转换为数组：

$array[0] = 'Why';
$array[1] = 'hello';
$array[2] = 'how';
$array[3] = 'are';
$array[4] = 'you';

It works great on php, but i have no idea on how to implement it on javascript, since there is no preg_match_all in phpjs.org. Any ideas? Thanks.

它在php上工作得很好，但我不知道如何在javascript上实现它，因为phpjs.org中没有preg_match_all。有任何想法吗？谢谢。

3 个解决方案

#1

Use the String.match method, with the g (global) flag set on the RegEx. \w is equivalent to [a-zA-Z0-9_]. If you really want to mimic your current pattern, use this page as a reference to convert the character properties in a JavaScript pattern.

使用String.match方法，在RegEx上设置g（全局）标志。 \ w相当于[a-zA-Z0-9_]。如果您确实想模仿当前模式，请使用此页面作为参考，以转换JavaScript模式中的字符属性。

function sanitize_words($string) {
    return $string.match(/\w+/g);
}

#2

The JavaScript split() function will make an array from any string using a delimiter. In this case, a space.

JavaScript split（）函数将使用分隔符从任何字符串生成数组。在这种情况下，一个空间。

var str = "Why hello, how are you?".split(" ")
alert(str[0]) // = "Why"

#3

You don't need a regex, split will do in javascript.

你不需要正则表达式，拆分将在javascript中完成。

<script type="text/javascript">
var myString = "zero one two three four";

var mySplitResult = myString.split(" ");

for(i = 0; i < mySplitResult.length; i++){
    document.write("<br /> Element " + i + " = " + mySplitResult[i]); 
}
</script>

Displays:

显示：

Element 0 = zero
Element 1 = one
Element 2 = two
Element 3 = three
Element 4 = four

As a side note, in your PHP script, if all you are wanting to do is create an array of words you should use explode() it has a LOT less overhead:

作为旁注，在你的PHP脚本中，如果你想要做的就是创建一个单词数组，你应该使用explode（）它有更少的开销：

<?php
$pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";
// to remove non alpha-numeric chars, and still less costly
$pizza = preg_replace('/[^a-zA-Z0-9\s]/', '', $pizza);
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
?>

#1

function sanitize_words($string) {
    return $string.match(/\w+/g);
}

#2