js get path URL parameter suggestion collection

function getQueryVariable(variable) {
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i = 0; i < vars.length; i++) {
        var pair = vars[i].split("=");
        if (pair[0] === variable) { return pair[1]; }
    }
    return '';
}

　　Example: var id = getQueryVariable ('id');

        var pid= getQueryVariable('pid');