在字符串中查找数组中的单词，仅限整个单词（使用希伯来字符）

I have to build a RegExp obejct, that will search words from an array, and will find only whole words match.

我必须构建一个RegExp obejct,它将从一个数组中搜索单词,并且只能找到整个单词匹配。

e.g. I have a words array ('יל','ילד'), and I want the RegExp to find 'a' or 'יל' or 'ילד', but not 'ילדד'.

例如我有一个单词数组('ל','ל''),我希望RegExp找到'a'或'ל'或'ל'',但不是'יל''。

This is my code:

这是我的代码:

var text = 'ילד ילדדד יל';
var matchWords = ['יל','ילד'];
text = text.replace(/\n$/g, '\n\n').replace(new RegExp('\\b(' + matchWords.join('|') + ')\\b','g'), '<mark>$&</mark>');
console.log(text);

What I have tried:

我试过的:

I tried this code:

我试过这段代码:

new RegExp('(יל|ילד)','g');

It works well, but it find also words like "ילדדדד", I have to match only the whole words.

它运作良好,但它也发现像“ילדדדד”这样的词,我只能匹配整个单词。

I tried also this code:

我也试过这段代码:

new RegExp('\\b(יל|ילד)\\b','g');

but this regular expression doesn't find any word!

但是这个正则表达式找不到任何单词!

How should I build my RegExp?

我该如何建立我的RegExp?

2 个解决方案

#1

The word boundary \b is not Unicode aware. Use XRegExp to build a Unicode word boundary:

边界\ b这个词不是Unicode识别的。使用XRegExp构建Unicode字边界:

var text = 'ילד ילדדד יל';
var matchWords = ['יל','ילד'];
re = XRegExp('(^|[^_0-9\\pL])(' + matchWords.join('|') + ')(?![_0-9\\pL])','ig');
text = XRegExp.replace(text.replace(/\n$/g, '\n\n'), re, '$1<mark>$2</mark>');
console.log(text);

<script src="http://cdnjs.cloudflare.com/ajax/libs/xregexp/3.1.1/xregexp-all.min.js"></script>

Here, (^|[^_0-9\\pL]) is a capturing group with ID=1 that matches either the string start or any char other than a Unicode letter, ASCII digit or _ (a leading word boundary) and (?![_0-9\\pL]) fails the match if the word is followed with _, ASCII digit or a Unicode letter.

这里,(^ | [^ _ 0-9 \\ pL])是ID = 1的捕获组,它匹配字符串start或除Unicode字母,ASCII数字或_(前导词边界)之外的任何字符和( ?![_ 0-9 \\ pL])如果单词后跟_,ASCII数字或Unicode字母,则匹配失败。

#2

//Words to join
var words = ['apes', 'cats', 'bazooka'];
//String to search
var str = 'it\'s good that cats and dogs dont wear bazookas';
//End at start of line, end of line or whitespace
var end = '(^|$|\\s)';
//Regular expression string
var regex = end + "(" + words.join('|') + ")" + end;
//Build RegExp
var re = new RegExp(regex, "gi");
//Log results
console.log(str.match(re));

Or as function

或作为功能

var findWholeWordInString = (function() {
  //End at start of line, end of line or whitespace
  var end = '(^|$|\\s)';
  //The actual function
  return function(str, words) {
    //Regular expression string
    var regex = end + "(" + words.join('|') + ")" + end;
    //Build RegExp
    var re = new RegExp(regex, "gi");
    //Return results
    return str.match(re);
  };
})();
//Run test
console.log(findWholeWordInString('it\'s good that cats and dogs dont wear bazookas', ['apes', 'cats', 'bazooka']));

#1