js获取url参数

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//获取url中指定key的参数值
export const getQueryParam = (name, url = null) => {
    if (!url) url = window.location.search
    var q = url.match(new RegExp('[?&]' + name + '=([^&#]*)'))
    return (q && q[1]) || ''
}
//修改url中指定key的参数值
export const setQueryParam = (key, value, uri = null) => {
    uri = uri || window.location.href;//window.location.search.href
    var re = new RegExp('([?&])' + key + '=.*?(&|$)', 'i')
    var separator = uri.indexOf('?') !== -1 ? '&' : '?'
    if (uri.match(re)) {
        return uri.replace(re, '$1' + key + '=' + value + '$2')
    } else {
        return uri + separator + key + '=' + value
    }
}