JavaScript中的RegEx帮助-提取第二个匹配项[重复]

Question

我有以下字符串：

mmSuggestDeliver(0, new Array("Name", "Category", "Keywords", "Bias", “扩展”，“ID”），新阵列（新阵列（“Advance Auto Parts Inc.”， "Aktien", "982516|US00751Y1064|AAP||", "85", "", "Advance_Auto_Parts|982516|1|13715"),new Array("iShares China Large Cap UCITS ETF", "Anzeige", "", "100", "", "http://suggest-suche-A0DK6Z")), 2, 0);

我想提取以粗体书写的证券名称。

这是我尝试的：

var regEx = new RegExp(/"\w+\|/, 'g');
var text = 'mmSuggestDeliver(0, new Array("Name", "Category", "Keywords", "Bias", "Extension", "IDs"), new Array(new Array("Britvic Plc", "Aktien", "A0HMX9|GB00B0N8QD54|||", "85", "", "Britvic|A0HMX9|1|15568"),new Array("<div class=\"pull-left mright-5 image_logo_ishares2\"></div><div class=\"pull-left\">iShares MSCI AC Far East ex-Japan UCITS ETF</div>", "Anzeige", "", "100", "", "http://g.finanzen.net/ishares-suggest-suche-A0HGV9")), 2, 0);';
var securityName = regEx.exec(text);

console.log(securityName);

仅返回第一个匹配 A0HMX9|。我想要第二个。我怎样才能做到这一点？

谢谢！

Answer 1

正如 Wiktor Stribiżew 建议的 in comments，您可能想要 String.prototype.match 而不是 RegExp.prototype.exec：

var regEx = new RegExp(/"\w+\|/, 'g');
var text = 'mmSuggestDeliver(0, new Array("Name", "Category", "Keywords", "Bias", "Extension", "IDs"), new Array(new Array("Britvic Plc", "Aktien", "A0HMX9|GB00B0N8QD54|||", "85", "", "Britvic|A0HMX9|1|15568"),new Array("<div class=\"pull-left mright-5 image_logo_ishares2\"></div><div class=\"pull-left\">iShares MSCI AC Far East ex-Japan UCITS ETF</div>", "Anzeige", "", "100", "", "http://g.finanzen.net/ishares-suggest-suche-A0HGV9")), 2, 0);';
var securityName = text.match(regEx);

console.log(securityName);

RegExp.prototype.exec 将在每次执行时返回一个匹配项（请参阅Nata Zakharchuk's answer），而String.prototype.match 返回所有匹配项（前提是您设置了g 修饰符）。

Answer 2

const regex = /"\w+\|/g;
const str = `mmSuggestDeliver(0, new Array("Name", "Category", "Keywords", "Bias", "Extension", "IDs"), new Array(new Array("Advance Auto Parts Inc.", "Aktien", "982516|US00751Y1064|AAP||", "85", "", "Advance_Auto_Parts|982516|1|13715"),new Array("iShares China Large Cap UCITS ETF", "Anzeige", "", "100", "", "http://suggest-suche-A0DK6Z")), 2, 0);`;
let m;

while ((m = regex.exec(str)) !== null) {
    // This is necessary to avoid infinite loops with zero-width matches
    if (m.index === regex.lastIndex) {
        regex.lastIndex++;
    }

    // The result can be accessed through the `m`-variable.
    m.forEach((match, groupIndex) => {
        console.log(`Found match, group ${groupIndex}: ${match}`);
    });
}