Question

我有以下字符串：

mmSuggestDeliver（0，新数组（＆＃34;名称＆＃34;，＆＃34;类别＆＃34;，＆＃34;关键字＆＃34;，＆＃34;偏见＆＃34;，＆＃34;扩展＆＃34;，＆＃34; ID＆＃34;），新阵列（新阵列（＆＃34; Advance Auto Parts Inc.＆＃34;，＆＃34; Aktien＆＃34;，＆＃34; 982516 | US00751Y1064 | AAP ||＆＃34;，＆＃34; 85＆＃34;，＆＃34;＆＃34;，＆＃34; Advance_Auto_Parts | 982516 | 1 | 13715＆＃34;），新数组（＆＃34; iShares China Large Cap UCITS ETF＆＃34;，＆＃34; Anzeige＆＃34;，＆＃34;＆＃34;，＆＃34; 100＆＃34;，＆＃34;＆＃34;，＆＃34; http://suggest-suche-A0DK6Z＆＃34;）），2,0;）

我想提取以粗体显示的安全性名称。

这是我尝试的：

＆＃13;

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);

＆＃13;

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

＆＃13;

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}`);
    });
}

＆＃13;

Answer 2

正如WiktorStribiżew建议in comments，您可能需要start()而不是String.prototype.match：

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);会在每次执行时返回一个匹配（请参阅Nata Zakharchuk's answer），而RegExp.prototype.exec会返回所有匹配项（假设您设置了String.prototype.match修饰符）。

JavaScript中的RegEx帮助 - 提取第二个匹配

2 个答案: