js获取href多个参数值

// 假设当前页面的URL是 https://example.com/page.html?param1=value1&param2=value2

// 方法一：使用URLSearchParams
const params = new URLSearchParams(window.location.search);

// 获取单个参数值
const param1 = params.get('param1'); // "value1"
const param2 = params.get('param2'); // "value2"

// 如果需要获取所有同名参数的值（例如：?tag=javascript&tag=programming）
const allTags = params.getAll('tag'); // ["javascript", "programming"]

console.log(param1, param2, allTags);

// 方法二：手动解析
function getQueryParams() {
    const queryEnd = window.location.href.indexOf('?') + 1;
    const queryStart = window.location.href.indexOf('?', queryEnd) + 1;
    const queryEndIndex = window.location.href.indexOf('#', queryStart) || window.location.href.length;
    const query = window.location.href.substring(queryStart, queryEndIndex);
    const pairs = query.split('&');
    const params = {};

    for (const pair of pairs) {
        const [key, value] = pair.split('=').map(decodeURIComponent);
        if (params[key]) {
            if (Array.isArray(params[key])) {
                params[key].push(value);
            } else {
                params[key] = [params[key], value];
            }
        } else {
            params[key] = value;
        }
    }

    return params;
}

const queryParams = getQueryParams();
console.log(queryParams.param1, queryParams.param2);