Add first parameter in the query string

Question

I have a url like "http://localhost:8080/myapp?age=12&add=mumbai&name=myname" Now I want to add one parameter(tel=12345) as the first parameter in the query string like "http://localhost:8080/myapp?tel=12345&age=12&add=mumbai&name=myname"

I have tried below snippet

var str = "http://localhost:8080/myapp?age=12&add=mumbai&name=myname";

var txt2 = str.slice(0, str.indexOf("?")) + "tel=12345&" + str.slice(str.indexOf("?"));
alert(txt2);

But the result is incorrect

http://localhost:8080/myapptel=12345&?age=12&add=mumbai&name=myname

Is there a better way???

why can't you use simple string concatenation? any particular reason behind this? — divakar
– divakar, Commented May 4, 2017 at 5:07
I have a requirement where I want to add it as a first parameter and not append it in the string — happy
– happy, Commented May 4, 2017 at 5:09

Sergii K · Accepted Answer · 2017-05-04 05:18:47Z

1

Try this:

var str = "http://localhost:8080/myapp?age=12&add=mumbai&name=myname";

var txt2 = str.slice(0, str.indexOf("?")) + "?" + "tel=12345&"
//                                        ^^^^^
    + str.slice(str.indexOf("?") + 1);
//                               ^^^

alert(txt2);

edited May 4, 2017 at 5:18

answered May 4, 2017 at 5:08

Sergii K

8661 gold badge9 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

happy Over a year ago

It gives "localhost:8080/myapp?tel=12345&?age=12&add=mumbai&name=myname"

Sergii K Over a year ago

Yes, sorry. Edited.

Sachin Gupta · Accepted Answer · 2017-05-04 05:10:31Z

0

You need to just increment index by 1 and this will work.

E.g.:

var txt2 = str.slice(0, str.indexOf("?") + 1 ) + "tel=12345&" + str.slice(str.indexOf("?") + 1);

answered May 4, 2017 at 5:10

Sachin Gupta

8,4684 gold badges36 silver badges47 bronze badges

Comments

divakar · Accepted Answer · 2017-05-04 05:15:50Z

0

var txt2=str.split('?')[0]+'?tel=12345&'+str.split('?')[1];

Just a variation.

answered May 4, 2017 at 5:15

divakar

1,3796 gold badges15 silver badges31 bronze badges

Collectives™ on Stack Overflow

Add first parameter in the query string

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related