Question

如何搜索单词并以字符串开头，并搜索另一个单词以结束字符串，例如：

var string = "Hello whole world";

以“Hello”开头，以“world”结尾

所以它将是：

var string = " whole ";

希望我的问题很清楚

Answer 1

＆＃13;

var text = "Hello whole world";
var re = /^\w+\s+(.*)\s+\w+$/;
var result = re.exec(text);
alert(result[1]);

＆＃13;

Answer 2

function findBetween(text, start, end) {
    var startIndex = text.indexOf(start);
    var endIndex = text.lastIndexOf(end);

    if (startIndex === -1) {
        throw new Error("Start string not found.");
    } else if (endIndex === -1) {
        throw new Error("End string not found.");
    }

    startIndex += start.length;

    if (startIndex > endIndex) {
        throw new Error("Start found after end!");
    }

    return text.substring(startIndex, endIndex);
}

console.log(findBetween("Hello whole world", "Hello", "world"));

// Output:
//  whole

如何从字符串开始（从文本开始）和结束（到文本）

2 个答案: