ES6一行(如果我们可以这样称呼它，看到长行)

[…新URLSearchParams (location.search) .entries())。Reduce ((prev， [key,val]) => {prev[key] = val;返回prev}， {})

我也遇到了同样的问题，尝试了这里的解决方案，但没有一个真正有效，因为我在URL参数中有数组，像这样:

?param[]=5&param[]=8&othr_param=abc&param[]=string

所以我最终写了我自己的JS函数，它使一个数组的参数在URI:

/**
 * Creates an object from URL encoded data
 */
var createObjFromURI = function() {
    var uri = decodeURI(location.search.substr(1));
    var chunks = uri.split('&');
    var params = Object();

    for (var i=0; i < chunks.length ; i++) {
        var chunk = chunks[i].split('=');
        if(chunk[0].search("\\[\\]") !== -1) {
            if( typeof params[chunk[0]] === 'undefined' ) {
                params[chunk[0]] = [chunk[1]];

            } else {
                params[chunk[0]].push(chunk[1]);
            }


        } else {
            params[chunk[0]] = chunk[1];
        }
    }

    return params;
}

如果你正在使用URI.js，你可以使用:

https://medialize.github.io/URI.js/docs.html#static-parseQuery

var result = URI.parseQuery("?foo=bar&hello=world&hello=mars&bam=&yup");
result === {
  foo: "bar",
  hello: ["world", "mars"],
  bam: "",
  yup: null
};

//under ES6 
const getUrlParamAsObject = (url = window.location.href) => {
    let searchParams = url.split('?')[1];
    const result = {};
    //in case the queryString is empty
    if (searchParams!==undefined) {
        const paramParts = searchParams.split('&');
        for(let part of paramParts) {
            let paramValuePair = part.split('=');
            //exclude the case when the param has no value
            if(paramValuePair.length===2) {
                result[paramValuePair[0]] = decodeURIComponent(paramValuePair[1]);
            }
        }

    }
    return result;
}

许多其他的解决方案没有考虑到边界情况。

这个可以处理

空键a=1&b=2& 空值a=1&b 空值a=1&b= 未编码的等号a=1&b=2=3=4

  decodeQueryString: qs => {
    // expects qs to not have a ?
    // return if empty qs
    if (qs === '') return {};
    return qs.split('&').reduce((acc, pair) => {
      // skip no param at all a=1&b=2&
      if (pair.length === 0) return acc;
      const parts = pair.split('=');
      // fix params without value
      if (parts.length === 1) parts[1] = '';
      // for value handle multiple unencoded = signs
      const key = decodeURIComponent(parts[0]);
      const value = decodeURIComponent(parts.slice(1).join('='));
      acc[key] = value;
      return acc;
    }, {});
  },

ES6有一个非常简单而不正确的答案:

console.log(
  Object.fromEntries(new URLSearchParams(`abc=foo&def=%5Basf%5D&xyz=5`))
);

但是这一行代码不包括多个相同的键，你必须使用更复杂的东西:

function parseParams(params) {
  const output = [];
  const searchParams = new URLSearchParams(params);

  // Set will return only unique keys()
  new Set([...searchParams.keys()])
    .forEach(key => {
      output[key] = searchParams.getAll(key).length > 1 ?  
        searchParams.getAll(key) : // get multiple values
        searchParams.get(key); // get single value
    });

  return output;
}

console.log(
   parseParams('abc=foo&cars=Ford&cars=BMW&cars=Skoda&cars=Mercedes')
)

代码将生成如下结构:

[
  abc: "foo"
  cars: ["Ford", "BMW", "Skoda", "Mercedes"]
]