javascriptでquery stringを連想配列で取得する関数

getQueryString.js

var getQueryString = function(option) {
    var delimiter;
    if (!option || !option.hasOwnProperty('delimiter')) {
        delimiter = '&';
    } else {
        delimiter = option.delimiter;
    }
    
    var slice_point = window.location.href.indexOf('?');
    if (slice_point < 0) {
        console.log("Not found query String.");
        return null;
    }
    
    var url_params = window.location.href.slice(slice_point + 1).split(delimiter);
    var query_strings = {};
    for(var i in url_params) {
        var query_string = url_params[i].split('=');
        query_strings[query_string[0]] = query_string[1];
    }
    
    return query_strings;
}

This doesn't handle when a query string doesn't have a value, it should then return null.

See: https://github.com/sindresorhus/query-string