javascript 从url（GET）检索会话变量和http查询字符串

Posted 2021-05-03

// retreieve var from querystring (GET) from url http://www.xyz.com/whatever.html?tmp=12345
// requriers jQuery
const urlParams = new URLSearchParams(window.location.search);
var tmpFromQuerystring = urlParams.get('tmp');

// retreive session variable
// requires PHP
var tmpFromSessionVariable  = "<?php echo $_SESSION['tmp']?>";

// prefer session variable over querystring variable
if (tmpFromSessionVariable) {
  ticketTypeID = tmpFromSessionVariable
  } else {
    tmp = tmpFromQuerystring
  }