正则js 获取参数名 正则

function getUrlParameterNames(url) {
    const queryEnd = url.indexOf('?') + 1;
    const queryStart = url.indexOf('?', queryEnd);
    const queryEndIndex = url.indexOf('#', queryStart) === -1 ? url.length : url.indexOf('#', queryStart);
    const query = url.substring(queryStart, queryEndIndex);
    const paramsArray = query.split('&');
    const result;

    if (paramsArray.length === 1 && paramsArray[0] === '') {
        return [];
    }

    return paramsArray.reduce((params, param) => {
        const [key, value] = param.split('=');
        params.push(key);
        return params;
    }, []);
}

// 使用正则表达式的版本
function getUrlParameterNamesWithRegex(url) {
    const regex = /[?&]([^=#]+)=/g;
    let match;
    const params = new Set();

    while ((match = regex.exec(url)) !== null) {
        params.add(match[1]);
    }

    return Array.from(params);
}

// 示例URL
const url = 'https://example.com/?param1=value1&param2=value2#section';

// 获取参数名
const parameterNames = getUrlParameterNamesWithRegex(url);
console.log(parameterNames); // 输出: ["param1", "param2"]