javascript - 使用 JavaScript 忽略 "a"、 "the"等的字符串搜索

Question

我正在寻找类似的东西:

if(magicSearch("hot pizza","We sell pizza that is really hot") {//Found!}

如果两个词都出现(任何顺序)，我只想要一个“true”，我希望它忽略要搜索的文本中的“a”、“and”、“the”等内容。

(我确信有更好的术语来解释我在找什么)

我见过各种数据库引擎支持这种类型的文本搜索(例如 Mongodb)，但我需要一种简单的 JavaScript 方法来测试字符串。我可以构建它，但感觉它一定已经存在于某处。

格雷格

Answer 1

您可以在一个简单的循环中使用 indexOf 函数。

//Use this if you don't need to find exact matches of words
function magicSearch(needles, haystack) {
    var searchTerms = (needles instanceof Array) ? needles : [needles];
    for(var i = 0; i < searchTerms.length; i++) {
        if(haystack.indexOf(searchTerms[i]) === -1) {
            return false;
        }
    }
    return true;
}

//Use this if you want to find exact matches of words
function magicSearch2(needles, haystack) {
    var searchTerms = (needles instanceof Array) ? needles : [needles],
        haystackArray = haystack.split(' '),
        index, 
        found = 0;

    for(var i = 0; i < haystackArray.length; i++) {
        index = searchTerms.indexOf(haystackArray[i]);
        if(index !== -1) {
            delete searchTerms[i];
            found++;
            if(found = searchTerms.length) {
                return true;
            }
        }
    }
    return false;
}
if(magicSearch(["hot", "pizza"],"We sell pizza that is really hot") {
    console.log("FOUND");
}
if(magicSearch2(["hot", "pizza"],"We sell pizza that is really hot")) {     
    console.log("FOUND");
}