从查询字符串中检索值，并将其以隐藏值的形式发送-javascript
[英]Retrieve value from query string and send it in a form as HIDDEN VALUE - javascript
问题描述
I'm trying to figure how to post from an HTML to another page andm, in the meantime, insert values in the hidden form BEFORE send the form itself. 
我试图弄清楚如何从HTML发布到另一个页面，同时，在发送表单本身之前，在隐藏的表单中插入值。
<html> <head> <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="TEXT/HTML;CHARSET=UTF-8"> <META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE"> <META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE"> <META HTTP-EQUIV="EXPIRES" CONTENT="-1"> <script> var param1var = getQueryVariable("TARGET"); function getQueryVariable(variable) { var query = window.location.search.substring(1); var vars = query.split("&"); for (var i=0;i<vars.length;i++) { var pair = vars[i].split("="); if (pair[0] == variable) { alert("TARGET FOUND!"); alert(pair[1]); return pair[1]; } } alert('Query Variable ' + variable + ' not found'); } </script> </head> <form name="LOGIN" action="/mynextpage/mypage.html" method="post"> <table> <tr> <td><P><span>Username :</span></P></td> <td><P><input name="USER" type="text" value="" style="width:150px" /></P></td> </tr> <tr> <td><P><span>Password :</span></P></td> <td><P><input name="PASSWORD" type="password" value="" style="width:150px" /></P></td> </tr> </table> </div> <INPUT type=HIDDEN name="TARGET" value=param1var <P> <input name="submit" type="submit" value="Login" /> <input name="Reset" type="reset" /> </P> </div> </form>
The first part of the javascript code is able to capture a TARGET value I need to use: it is present (i'm calling it param1var) and I'm able to alert out just for confirmation. javascript代码的第一部分能够捕获我需要使用的TARGET值：它存在（我称其为param1var），并且我能够提醒您进行确认。
Now, in the form, I need to: - insert in the input hidden the value retrieved by the above code (so, the param1var value) - post the entire for to the page /mynextpage/mypage.html that will take username, password and the hidden value 现在，在表单中，我需要：-将上面的代码检索到的值（即param1var值）插入到隐藏的输入中-将整个for张贴到将使用用户名，密码的页面/mynextpage/mypage.html中和隐藏的价值
Can you help me on how to achieve it? 您能帮我实现它吗？ I can use only html page as first page. 我只能将html页面用作首页。
Thanks 谢谢
1 个解决方案
解决方案1
-1 2018-07-06 10:35:28
document.querySelector('.target').value=param1var; document.querySelector（'。target'）。value = param1var; at the same time your hidden input put the class target 同时您隐藏的输入将类目标
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