如何使用正则表达式比较单词却忽略某些单词？

Question

I have made a search engine and I am comparing a search string against a list of words. 我做了一个搜索引擎，并且正在将搜索字符串与单词列表进行比较。 However I want to omit words like "How,do,i" . 但是我想省略诸如"How,do,i" 。 So if the user search for "How do I find my IP?" 因此，如果用户搜索"How do I find my IP?" . 。 If I have 3 other items beginning with How do I it wouldn't really be able to return a good relevancy. 如果我还有3个其他的内容以How do I开头， How do I它实际上将无法返回良好的相关性。

right now its setup (a-z0-9)+userinput+(a-z0-9) Wanted to have a list of words to be omitted so they would not be matched. 现在，它的设置(a-z0-9)+userinput+(a-z0-9)希望有一个要省略的单词列表，以便它们不匹配。 I am using javascript only please assist. 我仅使用JavaScript，请协助。

Answer 1

Another updated example, now using \\b 另一个更新的示例，现在使用\\ b

<html>
    <head>
    <script type="text/javascript">
        var unwanted = new RegExp(
            "\\b("+ [
                "(how|where|what) do (I|you)",
                "some",
                "other",
                "words",
                "or phrases",
                "that",
                "is",
                "unwanted"
          ].join("|")+ ")(?=\\b)",
        "ig" // Ignore case, global
        );

        function dosearch(e){
            var search = e.search.value;
            search = search.replace(unwanted,"");

            alert(search);
            return false;
        }
        </script>
</head>
<body>
    <form method="post" action="" onsubmit="return dosearch(this)">
        search: <input type="text" name="search">
    </form>
</body>
</html>

如何使用正则表达式比较单词却忽略某些单词？

问题描述

1 个解决方案

解决方案1
0 已采纳 2010-10-21 03:06:33

如何使用正则表达式比较单词却忽略某些单词？

问题描述

1 个解决方案

解决方案1 0 已采纳 2010-10-21 03:06:33

解决方案1
0 已采纳 2010-10-21 03:06:33