Query Parameters - Web Development Udacity English (auto-generated) English

Query Parameters - Web DevelopmentYouTube↗ IA↗(long shot)
Education 22.6K views 78 likes 3 dislikes 23 Feb 2015

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okay let's add something new to our URLs

Okay. Let's add something new to our URLs called a

called a query parameter also known as get parameters and we'll talk about this

query parameter, also known as get parameters, and we'll talk

name shortly when we start talking about

about this name shortly, when we start talking about HTTP.

HTTP here is an example we've got our normal URL or the type of the simple URL

Here is an example. We've got our normal URL or the

we just discussed with a simple path

type of, the simple URL we just discussed, with a,

slash foo and we've added to the end of

a simple path slash foo and we've added to the

this a question mark P equals 1 and this

end of this a question mark p equals one. And

adds an actual extra parameter whose

this adds an actual, extra parameter whose name is P and

name is P and whose value is 1 the

whose value is one. The format of a query parameter looks

format of a query parameter it looks like this you've got name equals value or in this case P equals 1 and the value

like this. You've got name equals value, or in this case

can be just about anything but it's good

P equals 1. And the value can be just about anything,

not to use question marks and other URL

but it's good not to use question marks and other URL

characters although you could if you

characters, although you could if you really wanted. We can make

really wanted we can make this a little bit more complicated by adding more

this a little bit more complicated by adding more query parameters.

query parameters let's do that we've added a second query parameter the first

Let's do that. We've added a second query parameter. The first

query parameter is separated from the URL using a question mark all of the

query parameter is separated from the UR, URL using a, question

following parameters are separated from

mark. All of the following parameters are separated from each other

each other using ampersands first one

using ampersands. First one gets a question mark. The next one

gets a question mark the next one gets an ampersand in this case the new

gets an ampersand. In this case, the new parameter is Q,

parameter is Q and it equals the string neat so we have these query parameters

and it equals the string neat. So, we have these query

what are they for therefore basically

parameters. What are they for? They're for basically, when you, when

when you when you make a request for this path this is extra information the

you make a request for this path, this is extra information

server gets and there's all sorts of

the server gets, and there's all sorts of things you can

things you can do with this if this is a web application doing fancy things these

do with this. If this is a, a web application doing fancy

parameters might mean something it can

things these parameters might mean something. It can affect the

affect caching because technically it changes the entire URL so there are all

caching because technically it changes the entire URL. So there

sorts of Handy uses that we'll discuss

are all sorts of handy uses that we'll discuss later

later in the class for what these query parameters can do but they're separate

in the class for what these query parameters can do. But

from the path but they are included in

they are separate from the path. But they are included

part of the whole URL that the server

in part of the whole URL that the server sees

sees when you make a request in the

when you make a request. In the following URL, what

following URL what is the value of the Z parameter here is your URL

is the value of the Z parameter? Here is your URL.

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