i am using the following method to get parameter by name:
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
and i was wondering how to change it to get parameter that contains some string for example, i want to get the parameter that contains the word "document" but the whole parameter name is not "document".
please advise, thanks.
Like this?
val = location.search.match(/document.*?=([^&]*)/)[1]
Although I'd rather use a function that converts the whole query string into an object (like this one) and simply apply a filter afterwards:
params = urlParams()
ks = Object.keys(params).filter(function(k) { return k.indexOf("document") >= 0 })
if(ks)
value = params[ks[0]];
This way you can easily support multiple params (as in document1=foo&document2=bar) and avoid ugly dynamic regexp construction.
In older browsers you can use this instead of Object.keys/filter:
ks = []
for(var k in params)
if(k.indexOf("document") >= 0)
ks.push(k);
Suggestion:
function getParameterByPartialName(name) {
name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regex = new RegExp("[\\?&][^&#]*" + name + "[^=]*=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
This however, will return only the 1st match, there might be more parameters that have a similar name. You could return an array of key-value pairs for all matches.
Related
I'm working on a code base someone else built and the search function uses this to get the parameter from the url to place as a value to search against. I've tried re-writing it, modifiying it, and everything else possible and can't figure out what is going on with the reutrn value from the function.
Here's the function
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
console.log(name);
var regex = new RegExp("[\\?&#;]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
console.log(results);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var part = getParameterByName('part_name');
The value of location.search is ?part_number=1234&go=GO
Then in the input box part_name if I type 1234 to be the value of the passed in parameter it will only show 12. However typing in other random numbers it will sometimes show them all correctly. If I type 124 as the search param then it displays correctly as searching against 124.
Is there something wrong with one of these regex statments that could be causing this, or is this something on the server side? The PHP seems fine on the backend but I'm not savvy on the Regex used in the Javascript code.
EDIT:
A testing snippet:
function getParameterByName(loc, name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
document.getElementById("res").innerHTML += "Name: " + name + " - ";
var regex = new RegExp("[\\?&#;]" + name + "=([^&#]*)"),
results = regex.exec(loc);
document.getElementById("res").innerHTML += results + "<br/>";
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var part = getParameterByName('?part_number=1234&go=GO', 'part_number');
var part2 = getParameterByName('?part_name=12&go=GO', 'part_name');
<div id="res"/>
I'm trying to retrieve a certain number from a string. But i can't figure out how to isolate the part i need.
The string:
https://intra.site.com/departments/travel/Lists/Booking/fd_Item_Display.aspx?List=8af14ed7-3bde-4ec0-b62a-9516324c967e&ID=15&Source=https%3A%2F%2Fintra%2Emonjasa%2Ecom%2Fdepartments%2Ftravel%2FPages%2Fdefault%2Easpx&ContentTypeId=0x0100B7DC1AFF519B6343BC8014EB1910DFAB
I need the number after ID=.
I did try to use string.replace() without luck.
How could I do this with regex?
Check this out :
function getParameterByName(url, parameter) {
var regex = new RegExp("[\\?&]" + parameter + "=([^&#]*)"),
results = regex.exec(url);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var url = 'https://intra.site.com/departments/travel/Lists/Booking/fd_Item_Display.aspx?List=8af14ed7-3bde-4ec0-b62a-9516324c967e&ID=15&Source=https%3A%2F%2Fintra%2Emonjasa%2Ecom%2Fdepartments%2Ftravel%2FPages%2Fdefault%2Easpx&ContentTypeId=0x0100B7DC1AFF519B6343BC8014EB1910DFAB';
var parameter = 'ID';
console.log( getParameterByName(url, parameter) );
// Log => 15
You can use:
var str = 'https://intra.site.com/departments/travel/Lists/Booking/fd_Item_Display.aspx?List=8af14ed7-3bde-4ec0-b62a-9516324c967e&ID=15&Source=https%3A%2F%2Fintra%2Emonjasa%2Ecom%2Fdepartments%2Ftravel%2FPages%2Fdefault%2Easpx&ContentTypeId=0x0100B7DC1AFF519B6343BC8014EB1910DFAB';
var id = (str.match(/&ID=([^&]*)/i) || ['', ''])[1];
//=> 15
Try this. Easier to understand.
function getID()
{
var str = "https://intra.site.com/departments/travel/Lists/Booking/fd_Item_Display.aspx?List=8af14ed7-3bde-4ec0-b62a-9516324c967e&ID=15&Source=https%3A%2F%2Fintra%2Emonjasa%2Ecom%2Fdepartments%2Ftravel%2FPages%2Fdefault%2Easpx&ContentTypeId=0x0100B7DC1AFF519B6343BC8014EB1910DFAB";
var id = str.match(/ID=(\d*)/)[1];
alert(id);
}
<input type="button" onclick="getID()" value="Click me">
I have an url have contain two parameters.
Ex: https://www.google.com.vn/search?q=news&oq=news&aqs=chrome..69i57j69i60l3.299j0j4&sourceid=chrome&es_sm=93&ie=UTF-8#q=bbc
Parameter 1: q=news
Parameter 2:q=bbc
I want to get all value have the same parameter, but I can only get value in first the parameter.
This is my code:
function getParameterByName(name, url) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&#]" + name + "=([^&#]*)"),
results = regex.exec(url);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
Use $(location).attr('href'); and parse through the parameters yourself
what i have tried is only IDEA of how you can get all paremater.
var a="https://www.google.com.vn/search?q=news&oq=news&aqs=chrome..69i57j69i60l3.299j0j4&sourceid=chrome&es_sm=93&ie=UTF-8#q=bbc"
var b= a.split("?")[1]
b.split("&")
By this technique you will get all parameter.
You need to convert this code to your required code.
The first q is in querystring, the second one is in hash. You should parse them in JavaScript:
QueryString
// the method is taken from http://stackoverflow.com/a/3855394/3971911
var qs = (function(a) {
if (a == "") return {};
var b = {};
for (var i = 0; i < a.length; ++i)
{
var p=a[i].split('=');
if (p.length != 2) continue;
b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
}
return b;
})(window.location.search.substr(1).split('&'));
Hash
// the method is taken from http://stackoverflow.com/a/11920807/3971911
function getHashValue(key) {
return location.hash.match(new RegExp(key+'=([^&]*)'))[1];
}
Now you can use them like this:
alert(qs['q']); // news
alert(getHashValue('q')); // bbc
try this:
function getParameterByName(name, url,position) {
url=position==1?url:url.substr(url.lastIndexOf('#'));
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&#]" + name + "=([^&#]*)"),
results = regex.exec(url);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var url='https://www.google.com.vn/search?q=news&oq=news&aqs=chrome..69i57j69i60l3.299j0j4&sourceid=chrome&es_sm=93&ie=UTF-8#q=bbc';
alert(getParameterByName('q',url,1));
alert(getParameterByName('q',url,2));
Demo
Other than an exercise in coding, you're probably better off using existing code.
Something like:
https://github.com/sindresorhus/query-string
Pros:
It has tests
It's had more useful eyes cast over it (guessing here).
The people that have likely contributed to it will probably have used it.
If you find an issue with it, those people involved will have a keen interest in solving the problem as they're likely using it.
Cons:
None! :D
I have created an application for getting the url parameter values using JavaScript, the application is working fine but the problem is that when the param key is having space then i am getting undefined
my code is as given below
script
function getParameter(paramName )
{
paramName = paramName.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
var regex = new RegExp("[\\?&]" + paramName + "=([^&#]*)", 'i'), results = regex.exec(location.search);
return results == null ? undefined : decodeURIComponent(results[1].replace(/\+/g, " "));
}
let say the url is like
http://localhost/myapp/index.html?User Id=145&Dept=HR
call
getParameter('Dept') ===> Gives HR
getParameter('User Id') ===> Gives undefined
can anyone please tell me some solution for this
I have the following string
name=cvbb&source=Mamma+Mia&startdate=2014-03-24
How can I match the value associated with name with regular expressions, namely the string "cvbb"
/[^name]=[^&]/ matches =cvbb but i want only cvbb
It looks like you want to get URL parameter value? In this case you could use this function :
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
var value = getParameterByName('startdate');
That would put 2014-03-24 in a var named value
I am assuming you want to select the name out, right? For that you can use the expression:-
/name=([\w]+)&source=.*/
Explanation: The first word name is written right there. After that ([\w]+) will match a list of alphanumeric characters. Then & will come and stop our selection. If you want to check that the string starts with name then use
/^name=([\w]+)&source=.*/
Caution: Using [^name] means that the characters should not be n,a,m or e which is not what you want to check. I hope this helps.
try
var queryString = 'name=cvbb&source=Mamma+Mia&startdate=2014-03-24';
var theStringImAfter = queryString.match(/[?&]name=([^&]*)/i)[1]
Note that queryString can be a full url e.g. from window.location.href, you don't need to parse the query string first.
If you are passing an encoded string (which is the norm if you are including characters not supported in a url such as a space, ampersand or equal sign etc.) you will want to decode the string before you use it. This can be done with decodeURIComponent(theStringImAfter).
Here is the same approach wrapped up in a reusable function
function getArg(url, arg){
var v=url.match(new RegExp('[?&]' + arg + '=([^&]*)', 'i'));
return (v)?decodeURIComponent(v[1]):'';
}
Usage:
var theStringImAfter = getArg('name=cvbb&source=Mamma+Mia&startdate=2014-03-24', 'name');