javascript - 如何添加或更新查询字符串参数？(How can I add or update a query string parameter?)

Question

With javascript how can I add a query string parameter to the url if not present or if it present, update the current value?

(使用javascript，如何将查询字符串参数添加到url（如果不存在）或如果存在，则更新当前值？)

I am using jquery for my client side development.

(我正在使用jquery进行客户端开发。)

  ask by amateur translate from so

Answer 1

I wrote the following function which accomplishes what I want to achieve:

(我编写了以下函数来实现我想要实现的功能：)

function updateQueryStringParameter(uri, key, value) {
  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;
  }
}