JavaScript 正则表达式搜索

Question

我通过网站生成了以下代码。我正在寻找的是脚本根据一组关键字扫描文本变量，如果找到任何关键字，则将其传递给变量。如果找到两个关键字，则将两个关键字用连字符连接起来并传递给变量。我还需要动态设置“var str”。例如，“var str == VAR10”。 VAR10 将有一个动态文本来搜索关键字。

var re = /Geo|Pete|Rob|Nick|Bel|Sam|/g;
var str = 'Sam maybe late today. Nick on call. ';
var m;

if ((m = re.exec(str)) !== null) {
    if (m.index === re.lastIndex) {
        re.lastIndex++;
    }
 }

在上面的代码中，Sam 和 Nick 是我想要连字符连接并传递给 VAR10 的两个关键字。

Answer 1

If two keywords are found, both are joined by a hyphen and passed to a variable

为了清楚起见，请尝试对原始代码进行此更新:

var re = /Geo|Pete|Rob|Nick|Bel|Sam/g;
var str = 'Sam maybe late today. Nick on call. ';
var m;
var VAR10 = ""; // holds the names found

if ((m = re.exec(str)) !== null) {
    var name1 = m;    

    if ((m = re.exec(str)) !== null) {
        var name2 = m; 
        // Two names were found, so hyphenate them
        // Assign name1 + "-" + name2 to the var that you want
        VAR10 = name1 + "-" + name2;
    } else {
        // In the case only one name was found:
        // Assign name1 to the var that you want
        VAR10 = name1;
    }
 }

注意，更改

var re = /Geo|Pete|Rob|Nick|Bel|Sam|/g;

至

var re = /Geo|Pete|Rob|Nick|Bel|Sam/g;

这是更新的演示:http://jsfiddle.net/7zg2hnt6/1/