How to pass variables between pages

{Code ...} I uploaded $ mes to another php page: & amp; lt; script & amp; gt; document. write (a) & amp; lt; script & amp; gt;, unable to be called, workhard.

《script》var test = [  "1",  "2",  "3",  "4",  "5",  "6"];var a = test[Math.floor(Math.random() * test.length)];document.write(a);《script》
  

I uploaded $ mes to another php page, which is《script》document.write(a)《script》And cannot be called.

Reply content:

《script》var test = [  "1",  "2",  "3",  "4",  "5",  "6"];var a = test[Math.floor(Math.random() * test.length)];document.write(a);《script》
  

I uploaded $ mes to another php page, which is《script》document.write(a)《script》And cannot be called.

For multi-page applications.
Then you canquerystringTo output the variable to the front end.
http://url/a?key=value
For a single page application, we recommend that you use the History API
pushState popStateAndreplaceState

There are two transmission methods

First, the explicit

Passed through url query string, as shown in figureHttp://dict.youdao.com/search? Q = China, WhereqThat is, the passed parameter.

Second, implicit

Pass through the SESSION in PHP, the content to be passed is saved in the php session in advance, jump to the page and let the subsequent page get the value in the SESSION.

Php:
$ _ GET is an array of variables passed to the current script through URL parameters.
$ _ POST is an array of variables passed to the current script through the http post method.

Therefore, you can pass the variables you want to pass to the next page through url or form post to the next page.

Criticize:

You think $ mes will get the result of this js execution. This shows that your basic skills are too weak and it is necessary to complete the basic knowledge.