正则表达式的帮助 - 提取的第二场比赛

Question

我有以下字符串：

mmSuggestDeliver（0，新的Array（ “名称”， “类别”， “关键字”， “偏见”， “扩展” ，“ID”），新阵列（新阵列（“Advance Auto Parts Inc.”， “Aktien”，“982516 | US00751Y1064 | AAP ||”，“85”，“”， “Advance_Auto_Parts | 982516 | ），新Array（“iShares中国大型股UCITS ETF”， “Anzeige”，“”，“100”，“”，“http://suggest-suche-A0DK6Z”）），2,0）;

我想提取用粗体书写的安全名称。

这是我尝试：

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);

只有第一场比赛A0HMX9|被退回。我想要第二个。我怎样才能做到这一点？

谢谢！

Answer 1

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}`); 
 
    }); 
 
}

Answer 2

由于Wiktor的Stribiżew建议in comments，你可能想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将返回一个唱在每次执行时匹配（请参阅Nata Zakharchuk's answer），而String.prototype.match会返回所有匹配项（前提是您设置了g修饰符）。