Javascript location

Методы переадресации JavaScript

В JavaScript window location или объект location используется, чтобы получить информацию о местоположении текущей веб-страницы (документа), а также для его изменения. Ниже приведен список способов, которые могут быть использованы для реализации переадресации JavaScript:

//Устанавливает новое местоположение текущего окна.
window.location = "http://www.example.com";
//Устанавливает новую гиперссылку (URL) для текущего окна.
window.location.href = "http://www.example.com";
// Присваивает новый URL текущему окну. 
window.location.assign("http://www.example.com");
//Заменяет положение текущего окна на новое. 
window.location.replace("http://www.example.com");
//Задает местоположение самого текущего окна. 
self.location = "http://www.example.com";
// Задает положение самого верхнего окна относительно текущего.
top.location = "http://www.example.com";

Хотя приведенные выше строки JavaScript кода выполняют схожую работу, у них есть небольшие отличия. Например, если вы используете перенаправление top.location внутри элемента iframe, то это принудительно перенаправит на главное окно. Еще один момент, о котором стоит помнить: location.replace() заменяет текущий документ, удаляя его из истории и делая его недоступным с помощью кнопки «Назад» в браузере.

Для реализации кроссбраузерности мы рекомендуем использовать следующий код JavaScript windows location:

window.location.href = "http://www.example.com";

Также вы можете зайти на эту страницу, чтобы подробнее узнать, как работает window.location.

JavaScript

JS Array
concat()
constructor
copyWithin()
entries()
every()
fill()
filter()
find()
findIndex()
forEach()
from()
includes()
indexOf()
isArray()
join()
keys()
length
lastIndexOf()
map()
pop()
prototype
push()
reduce()
reduceRight()
reverse()
shift()
slice()
some()
sort()
splice()
toString()
unshift()
valueOf()

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Date
constructor
getDate()
getDay()
getFullYear()
getHours()
getMilliseconds()
getMinutes()
getMonth()
getSeconds()
getTime()
getTimezoneOffset()
getUTCDate()
getUTCDay()
getUTCFullYear()
getUTCHours()
getUTCMilliseconds()
getUTCMinutes()
getUTCMonth()
getUTCSeconds()
now()
parse()
prototype
setDate()
setFullYear()
setHours()
setMilliseconds()
setMinutes()
setMonth()
setSeconds()
setTime()
setUTCDate()
setUTCFullYear()
setUTCHours()
setUTCMilliseconds()
setUTCMinutes()
setUTCMonth()
setUTCSeconds()
toDateString()
toISOString()
toJSON()
toLocaleDateString()
toLocaleTimeString()
toLocaleString()
toString()
toTimeString()
toUTCString()
UTC()
valueOf()

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS Math
abs()
acos()
acosh()
asin()
asinh()
atan()
atan2()
atanh()
cbrt()
ceil()
clz32()
cos()
cosh()
E
exp()
expm1()
floor()
fround()
LN2
LN10
log()
log10()
log1p()
log2()
LOG2E
LOG10E
max()
min()
PI
pow()
random()
round()
sign()
sin()
sinh()
sqrt()
SQRT1_2
SQRT2
tan()
tanh()
trunc()

JS Number
constructor
isFinite()
isInteger()
isNaN()
isSafeInteger()
MAX_VALUE
MIN_VALUE
NEGATIVE_INFINITY
NaN
POSITIVE_INFINITY
prototype
toExponential()
toFixed()
toLocaleString()
toPrecision()
toString()
valueOf()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

(x|y)
Metacharacters:
.
\w
\W
\d
\D
\s
\S
\b
\B
\0
\n
\f
\r
\t
\v
\xxx
\xdd
\uxxxx
Quantifiers:
+
*
?
{X}
{X,Y}
{X,}
$
^
?=
?!
Properties:
constructor
global
ignoreCase
lastIndex
multiline
source
Methods:
compile()
exec()
test()
toString()

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

JS String
charAt()
charCodeAt()
concat()
constructor
endsWith()
fromCharCode()
includes()
indexOf()
lastIndexOf()
length
localeCompare()
match()
prototype
repeat()
replace()
search()
slice()
split()
startsWith()
substr()
substring()
toLocaleLowerCase()
toLocaleUpperCase()
toLowerCase()
toString()
toUpperCase()
trim()
valueOf()

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

Window Object Properties

Property	Description
closed	Returns a Boolean value indicating whether a window has been closed or not
console	Returns a reference to the Console object, which provides methods for logging information to the browser’s console (See Console object)
defaultStatus	Sets or returns the default text in the statusbar of a window
document	Returns the Document object for the window (See Document object)
frameElement	Returns the <iframe> element in which the current window is inserted
frames	Returns all <iframe> elements in the current window
history	Returns the History object for the window (See History object)
innerHeight	Returns the height of the window’s content area (viewport) including scrollbars
innerWidth	Returns the width of a window’s content area (viewport) including scrollbars
length	Returns the number of <iframe> elements in the current window
localStorage	Allows to save key/value pairs in a web browser. Stores the data with no expiration date
location	Returns the Location object for the window (See Location object)
name	Sets or returns the name of a window
navigator	Returns the Navigator object for the window (See Navigator object)
opener	Returns a reference to the window that created the window
outerHeight	Returns the height of the browser window, including toolbars/scrollbars
outerWidth	Returns the width of the browser window, including toolbars/scrollbars
pageXOffset	Returns the pixels the current document has been scrolled (horizontally) from the upper left corner of the window
pageYOffset	Returns the pixels the current document has been scrolled (vertically) from the upper left corner of the window
parent	Returns the parent window of the current window
screen	Returns the Screen object for the window (See Screen object)
screenLeft	Returns the horizontal coordinate of the window relative to the screen
screenTop	Returns the vertical coordinate of the window relative to the screen
screenX	Returns the horizontal coordinate of the window relative to the screen
screenY	Returns the vertical coordinate of the window relative to the screen
sessionStorage	Allows to save key/value pairs in a web browser. Stores the data for one session
scrollX	An alias of pageXOffset
scrollY	An alias of pageYOffset
self	Returns the current window
status	Sets or returns the text in the statusbar of a window
top	Returns the topmost browser window

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

# Location Object

The returns a object. Which gives you information about the current location of the page. But you can also access the object in several ways.

The reason we can do this is because these are global variables in our browser.

window.location vs location

All 4 of these properties point at the same object. I personally prefer and would actually avoid using . Mainly because reads more like a generic term and someone might accidentally name their variable that, which would override the global variable. Take for example:

I think that most developer is aware that is a global variable. So you’re less likely to cause confusion. To be honest, I had no idea was a global variable until I wrote this post . So my recommendation is to be more explicit and use instead

Here’s my personal order of preference:

Of course, this is just my preference. You’re the expert of your codebase, there is no best way, the best way is always the one that works best for you and your team

JavaScript Redirect Methods

You can redirect a web page via JavaScript using a number of methods. We will quickly list them and conclude with the recommended one.

In JavaScript, window.location or simply location object is used to get information about the location of the current web page (document) and also to modify it. The following is a list of possible ways that can be used as a JavaScript redirect:

// Sets the new location of the current window.
window.location = "https://www.example.com";

// Sets the new href (URL) for the current window.
window.location.href = "https://www.example.com";

// Assigns a new URL to the current window.
window.location.assign("https://www.example.com");

// Replaces the location of the current window with the new one.
window.location.replace("https://www.example.com");

// Sets the location of the current window itself.
self.location = "https://www.example.com";

// Sets the location of the topmost window of the current window.
top.location = "https://www.example.com";

Though the above lines of JS code accomplish a similar job in terms of redirection, they have slight differences in their usage. For example, if you use top.location redirect within an iframe, it will force the main window to be redirected. Another point to keep in mind is that location.replace() replaces the current document by moving it from the history, hence making it unavailable via the Back button of the browser.

It is better to know your alternatives but if you want a cross-browser compliant JavaScript redirect script, our recommendation will be to use the following in your projects:

window.location.href = "https://www.example.com";

Simply insert your target URL that you want to redirect to in the above code. You can also check this page to read more about how window.location works. Now, let’s continue with our examples.

# window.location Properties

	Returns
	Base URL (Protocol + hostname + port number)
	Protocol Schema (: or )
	Domain name + port
	Domain name
	Port Number
	The initial ‘/’ followed by the Path
	followed by Query String
	followed by the Anchor or Fragment identifier
	Full URL

Difference between vs

In my above example, you will notice that and returns the value. So why do these properties. Well, it has do with the port number. Let’s take a look.

URL without Port

URL with Port

So will include the port number, whereas will only return the host name.

How to change URL properties

Not only can you call these location properties to retrieve the URL information. You can use it to set new properties and change the URL. Let’s see what I mean.

Here’s the complete list of properties that you can change:

The only property you can’t set is . This property is read-only.

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

Window Object Methods

Method	Description
alert()	Displays an alert box with a message and an OK button
atob()	Decodes a base-64 encoded string
blur()	Removes focus from the current window
btoa()	Encodes a string in base-64
clearInterval()	Clears a timer set with setInterval()
clearTimeout()	Clears a timer set with setTimeout()
close()	Closes the current window
confirm()	Displays a dialog box with a message and an OK and a Cancel button
focus()	Sets focus to the current window
getComputedStyle()	Gets the current computed CSS styles applied to an element
getSelection()	Returns a Selection object representing the range of text selected by the user
matchMedia()	Returns a MediaQueryList object representing the specified CSS media query string
moveBy()	Moves a window relative to its current position
moveTo()	Moves a window to the specified position
open()	Opens a new browser window
print()	Prints the content of the current window
prompt()	Displays a dialog box that prompts the visitor for input
requestAnimationFrame()	Requests the browser to call a function to update an animation before the next repaint
resizeBy()	Resizes the window by the specified pixels
resizeTo()	Resizes the window to the specified width and height
scroll()	Deprecated. This method has been replaced by the scrollTo() method.
scrollBy()	Scrolls the document by the specified number of pixels
scrollTo()	Scrolls the document to the specified coordinates
setInterval()	Calls a function or evaluates an expression at specified intervals (in milliseconds)
setTimeout()	Calls a function or evaluates an expression after a specified number of milliseconds
stop()	Stops the window from loading

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JavaScript Redirect: Redirect the Page After an Event or User Action

Sometimes, you may want to send the user to another page after a certain event or action takes place, such as a button click, an option selection, a layout change, a form submission, a file upload, an image drag, a countdown timer expiration or things like that. In such cases, you can either use a condition check or assign an event to an element for performing the redirect. You can use the following two examples to give you a basic idea:

<script>
// Check if the condition is true and then redirect.
if ( ... ) {
  window.location.href = "https://www.example.com";
}
</script>

The above code will do the redirection if the condition is true.

<script>
// onclick event is assigned to the #button element.
document.getElementById("button").onclick = function() {
  window.location.href = "https://www.example.com";
};
</script>

The above code will do the redirection when the user clicks the #button element.

This is how JavaScript redirect basically works. We hope that the above examples will help you while handling your web page redirects.

Переадресация JavaScript: перенаправление со страницы после события или действия пользователя

Иногда нужно отправить пользователя на другую страницу после определенного события или совершенного действия. В таких случаях можно использовать проверку условия или закрепить за элементом событие для выполнения переадресации. Рассмотрим два следующих примера:

<script>
// Проверяем, верно ли условие, и затем перенаправляем. 
if ( ... ) {
  window.location.href = "http://www.example.com";
}
</script>

Приведенный выше код JavaScript document location href выполнит перенаправление, если условие верно:

<script>
// событие onclick присвоено элементу #button.
document.getElementById("button").onclick = function() {
  window.location.href = "http://www.example.com";
};
</script>

Приведенный выше код выполнит перенаправление, когда пользователь нажмет на элемент #button.

Так работает переадресация в JavaScript. Надеемся, эти примеры помогут вам в организации переадресации веб-страниц.

Пожалуйста, оставляйте ваши комментарии по текущей теме материала. За комментарии, отклики, дизлайки, лайки, подписки огромное вам спасибо!

МЛМария Логутенкоавтор-переводчик статьи «JavaScript Redirect: How to Redirect a Web Page with JavaScript»

# How to Do a Page Redirect

By now, you know we can change the properties of the by assigning a value using . Similarly, there are methods we can access to do some actions. So in regards to «how to redirect to another page», well there are 3 ways.

replace vs assign vs href

All three does redirect, the difference has to do with browser history. and are the same here. It will save your current page in history, whereas won’t. So if you prefer creating an experience where the navigation can’t press back to the originating page, then use

So the question now is vs . I guess this will come to personal preference. I like the better because it’s a method so it feels like I’m performing some action. Also there’s an added bonus of it being easier to test. I’ve been writing a lot of Jest tests, so by using a method, it makes it way easier to mock.

Credit StackOverflow: @kieranroneill:

But for that that are rooting for to do a page redirect. I found a performance test and running in my version of Chrome, it was faster. Again performance test ranges with browser and different versions, it may be faster now, but perhaps in future browsers, the places might be swapped.

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

JavaScript

JS Boolean
constructor
prototype
toString()
valueOf()

JS Classes
constructor()
extends
static
super

JS Error
name
message

JS Global
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
eval()
Infinity
isFinite()
isNaN()
NaN
Number()
parseFloat()
parseInt()
String()
undefined
unescape()

JS JSON
parse()
stringify()

JS OperatorsJS RegExp
Modifiers:
g
i
m
Groups:

JS Statements
break
class
continue
debugger
do…while
for
for…in
for…of
function
if…else
return
switch
throw
try…catch
var
while

# window.location Methods


	Navigates to the given URL
	Navigates to given URL & removes current page from the session history
	Reload the current page
	Returns the URL

window.location.toString

Here’s the definition from MDN

In other words, you can use it to get the value from the

As to which to use, I couldn’t find much information as to which is better; but if you do, please submit a PR on this . But I did find a performance test on the difference.

One thing I want to note about these speed tests is that it is browser specific. Different browser and versions will render different outcome. I’m using Chrome, so the came out faster then the rest. So that’s one I’ll use. Also I think it reads more explicit then . It is very obvious that will provide the URL whereas seems like something it being converted to a string

assign vs replace

Both of these methods will help you redirect or navigate to another URL. The difference is will save your current page in history, so your user can use the «back» button to navigate to it. Whereas with method, it doesn’t save it. Confused? No problem, I was too. Let’s walk through an example.

Assign

Replace

Current Page

I just need to emphasize the «current page» in the definition. It is the page right before you call or .