问Javascript:搜索数组，查看它是否包含部分字符串

EN

var names = ["John", "Mary", "George"];
var regex = new RegExp("(^|[^a-zA-Z0-9])(" + names.join("|") + ")([^a-zA-Z0-9]|$)", "g");

regex.test("Did Johnathon go to the store today?"); // false
regex.test("Did John go to the store today?");      // true

var matches = [];
var sentence = "Did John or Mary go to the store today?";

sentence.replace(regex, function(match, $1, $2, $3) {
     matches.push($2);
});

console.log(matches);

function getMatchingWords(words, s) {
    var matches = [],
        regex = new RegExp("(^|[^a-zA-Z0-9])(" + words.join("|") + ")([^a-zA-Z0-9]|$)", "g");

    s.replace(regex, function(match, $1, $2, $3) {
        matches.push($2);
    });

    return matches;
}

var matches = getMatchingWords(["John", "Mary", "Billy"], "Did John or Mary go to the store today?");

var matches = [];

for(var i=0;i<names.length;i++){
    if(sentence.indexOf(names[i]) != -1){
        matches.push(names[i]);
    }
}

console.log(matches)

var sentence = "Did Mary go to the store today?";
var names = ["John", "Mary", "George"];
var found = [];

names.forEach(function(e) {
  if (sentence.toLowerCase().search(e.toLowerCase()) > -1) {
    found.push(e);
  }
});

alert(found);