javascript - 将正则表达式与项数组匹配

Question

在JavaScript中是否有一种方法可以获得字符串与正则表达式数组匹配的布尔值？

例子是('if'语句代表我想要实现的目标):

var thisExpressions = [ '/something/', '/something_else/', '/and_something_else/'];
var thisString = 'else';

if (matchInArray(thisString, thisExpressions)) {

} 

Answer 1

使用更实用的方法,您可以使用数组函数实现与单行的匹配:

ECMAScript 6:

const regexList = [/apple/, /pear/];
const text = "banana pear";
const isMatch = regexList.some(rx => rx.test(text));

ECMAScript 5:

var regexList = [/apple/, /pear/];
var text = "banana pear";
var isMatch = regexList.some(function(rx) { return rx.test(text); });

Answer 2

http://jsfiddle.net/9nyhh/1/

var thisExpressions = [/something/, /something_else/, /and_something_else/];
var thisExpressions2 = [/else/, /something_else/, /and_something_else/];
var thisString = 'else';

function matchInArray(string, expressions) {

    var len = expressions.length,
        i = 0;

    for (; i < len; i++) {
        if (string.match(expressions[i])) {
            return true;
        }
    }

    return false;

};

setTimeout(function() {
    console.log(matchInArray(thisString, thisExpressions));
    console.log(matchInArray(thisString, thisExpressions2));
}, 200)?

Answer 3

您可以使用.test()在找到您在另一个字符串中查找的内容时返回一个布尔值:

var thisExpressions = [ '/something/', '/something_else/', '/and_something_else/'];
var thisString = new RegExp('\\b' + 'else' + '\\b', 'i');
var FoundIt = thisString.test(thisExpressions);  
if (FoundIt) { /* DO STUFF */ }