Home > Developer > JavaScript

JavaScript gets HTML static page parameter pass value

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Let's take a look at my code. Just embed the code in the paging file

Example One

Using regular expressions to get

The code is as follows Copy Code

var locstring = String (window.document.location.href);
function Getquerystr (str) {
var rs = new RegExp ("(^|)" + str + "= ([^&]*) (&|$)", "GI"). EXEC (locstring), TMP;
if (tmp = RS) {
return tmp[2];
}
Parameter cannot be found
Return "";
}

Call method

The code is as follows Copy Code

document.getElementById ("User"). Value = Getquerystr ("user");
document.getElementById ("password"). Value = Getquerystr ("password");
document.getElementById ("Sysno"). Value = Getquerystr ("Sysno");


Case II

Use the Split function to cut an array by parameters

The code is as follows Copy Code

<script>

Urlinfo=window.location.href; Gets the URL of the current page
len=urlinfo.length;//gets the length of the URL
Offset=urlinfo.indexof ("?"); /sets the position at which the parameter string starts
NEWSIDINFO=URLINFO.SUBSTR (Offset,len)//Fetch parameter string This will get a string like "id=1"
Newsids=newsidinfo.split ("=");//To split the obtained argument string by "="
newsid=newsids[1];//get the parameter value
Alert ("The parameter value you want to pass is" +newsid);

</script>

But be sure to remember that this method is only useful for URLs that contain parameters
If the other side uses the Post method to pass the parameter URL, it will not contain parameters.
So this trick is only useful for get methods or URLs that specify parameters.

Let's look at a complete example

Aa.htm is the parametric input infiltration interface

Bb.htm is the parameter receive processing interface

Aa.htm

The code is as follows Copy Code

<body>

<script>

function Submit ()

{

var input1 = document.getElementById ("inputID");

window.open ("bb.htm?inputstr=" + input1.value);//Incoming parameters

}

</script>

<input type = "text" id = "inputID" >

<input type = "button" onclick = "submit ()" VALUE = "Submit" >

</body>

Bb.htm:

<script>

Methods of obtaining parameters

var request =

{

Querystring:function (Val)

{

var uri = Window.location.search;

var re = new RegExp ("+val+" = ([^&?] *) "," IG ");

Return (Uri.match (re))? ( Uri.match (re) [0].substr (Val.leng th+1)): null);

}

}

</script>

<body>

<script>

Call method Get parameter

var RT = Request. QueryString ("Inputstr");

alert (RT);

</script>

</body>

====================================

<title>test</title>

<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">

<script language= "JavaScript" >

<!--

var request = {

Querystring:function (val) {

var uri = Window.location.search;

var re = new RegExp ("+val+" = ([^&?] *) "," IG ");

Return (Uri.match (re))? ( Uri.match (re) [0].substr (Val.leng th+1)): null);

}

}

var a = Request. QueryString ("a");

var B = Request. QueryString ("B");

var c = Request. QueryString ("C");

if ((a!= null)) {a=a} else{a= "parameter a Null"}

if ((b!= null)) {b=b} else{b= "parameter B Empty"}

if ((c!= null)) {c=c} else{c= "parameter C Null"}

Document.writeln ("parameter A:" + a);

Document.writeln ("<br> parameter B:" + B);

Document.writeln ("<br> parameter C:" + C);

-->

</SCRIPT>

<body>

<form name= "Form1" action= "?" >

Please input parameter value:<br>

<script language= "JavaScript" >

Document.writeln ("A:<input type= ' text ' name= ' A ' value= '" "+a+" ' ><br> ");

Document.writeln ("B:<input type= ' text ' name= ' B ' value= '" "+b+" ' ><br> ");

Document.writeln ("C:<input type= ' text ' name= ' C ' value= '" "+c+" ' ><br> ");

</SCRIPT>

<input type= "Submit" name= "Submit" value= "Submission parameter view effect" >

</form>

</body>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
pass value from javascript to html how to pass parameter in javascript function from html javascript pass function as parameter javascript pass function as parameter with arguments javascript pass function as parameter callback pass checkbox value to javascript pass javascript variable to html

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More