Check url javascript

You will need this if you are working on a web site that depends on data extracted from the URL. Net such as using QueryString and using JavaScript methods at the client side itself. Whether you are using jQuery or JavaScript for your frontend, you can simply use the indexOf method with the href property using windows. The method indexOf returns the position a number of the first occurrence of a given string.

It will return -1if it finds nothing that matches the given string. You can use the indexOf method with href property of windows. For example. I wish to check if the URL contains the parameter?

My script would be …. For example. In my next postI have shared an example explaining how to replace a given string with another string in the URL bar using JavaScript or jQuery. Please enable JavaScript to view this page properly. The URL bar or the Address bar of a web browser contains the address of a website. The URL also contains parameters or arguments, which we often define dynamically to communicate with elements or objects on a web page.

Get URL and URL Parts in JavaScript

Sometimes we need extract the data that we pass to the URL as parameters. See this demo. Like this Article? Subscribe now, and get all the latest articles and tips, right in your inbox. Delivered by FeedBurner.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I'm using javascript to pass a dynamic url to iframe src. I've tried that code as it is and it didn't work well. The first is that the time to async send the request and change its property 'status' is slower than to execute the next expression - if request. So the request. To fix that is easy: change 'true' to 'false' on method open of the ajax request.

This will cause a brief or not so block on your code due to synchronous callbut will change the status of the request before reaching the test on if. The second is that the status is an integer. To make this work there are two ways:. If you want that snippet to work on all browsers you have to do in the way W3Schools suggests: w3schools ajax. Use a XHR and see if it responds you a or not.

But notice that it will only work on the same origin. For another host, you will have to use a server-side language to do that, which you will have to figure it out by yourself. The jqXHR. To prepare your code for their eventual removal, use jqXHR. If it's a remote domain, you could have a server script on your own domain check out a remote URL.

You can try and do a simple GET on the page, if you get a back it means the page exists. Try this using jQuerythe function is the success callback function on a successful page load.

Note this will only work on sites within your domain to prevent XSS. Other domains will have to be handled server side. Learn more. Asked 7 years, 10 months ago. Active 1 year, 9 months ago. Viewed k times. L84 Mario Mario 2 2 gold badges 15 15 silver badges 29 29 bronze badges.

check url javascript

Active Oldest Votes.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here.

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. RegExes are excluded because the URL is most likely written like stackoverflow ; that is to say that it might not have a. Javascript regex URL matching. Or this Regexp from Devshed :. However, if the value href is bound to is not a valid url, then the value of those auxiliary properties will be the empty string.

Edit: as pointed out in the comments: if an invalid url is used, the properties of the current URL may be substituted. Allows symbol in path e.

check url javascript

I don't have reps to comment on ValidURL example; hence post this as an answer. To validate such an URL with a regular expression the protocol part could be optional, e. As others noted, regular expression does not seem to be the best suited approach for validating URLs, though.

As has been noted the perfect regex is elusive but still seems to be a reasonable approach alternatives are server side tests or the new experimental URL API. It's been pointed out in some of the comments, but most probably haven't entered a bad value to see it. Hanging like that makes that code unusable in any serious application.

Take out the 'i' and it doesn't hang but will of course not work as desired. But even with the ignore case flag those tests reject high unicode values that are allowed. The good thing about a code repository is you can see the testing and any issues and also the test strings run through it.

There's a branch that would allow strings missing protocol like google. The repository has been updated and I'm not planning on trying to keep up a mirror here. It's been broken up into separate tests to avoid RegEx redos which can be exploited for DOS attacks I don't think you have to worry about that with client side js, but you do have to worry about your page hanging for so long that your visitor leaves your site.

It has a bigger test list of valid and invalid URLs. See this comparison of isURL regex by Mathias Bynens for more info before you post a seemingly great regex. I can't comment on the post that is the closestbut below is the way I figured out how to get tom-gullen regex working. You can also fine tune this function's behavior by passing optional options object as the second argument of isURL.

They also support regular expressions.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. All I want is to get the website URL. Not the URL as taken from a link. On the page loading I need to be able to grab the full, current URL of the website and set it as a variable to do with as I please. JavaScript provides you with many methods to retrieve and change the current URL, which is displayed in the browser's address bar.

All these methods use the Location object, which is a property of the Window object. You can create a new Location object that has the current URL as follows:. For example, www. A server provides services using the name of the host. With these Location object properties you can access all of these URL components and what they can set or return:.

Javascript- Send HTTP Get/Post Request and Read JSON response

Use window. If you just want to get the address as a read-only string, you may use document. URLwhich should contain the same value as window. For example, try this code on this page:. Open Developer Toolstype in the following in the console and press Enter. As noted above, document. URL doesn't update when updating window. See MDN. You can get the current URL location with a hash tag by using:.JavaScript provides multiple methods to get the current URL displaying in web browser address bar.

You can use the Location object property of the Window object to get these details. Below is the list of few properties of location object. The first example will get the current URL in a web browser. Other examples are also available for your reference. This will return the protocol of the URL in the address bar. I, Rahul Kumar am the founder and chief editor of TecAdmin. Thank you.

This is extremely useful. BTW, in 4 I think you meant — port. We provide solution regarding Google chrome. If your Google chrome web browser is not responding then visit us. We provide full assistance regarding it. Save my name, email, and website in this browser for the next time I comment.

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Check if the URL Bar Contains a Specified or Given String in JavaScript and jQuery

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This website uses cookies to improve performance and enhance the user experience. How to enable JavaScript in your browser Nowadays almost all web pages contain JavaScript, a scripting programming language that runs on visitor's web browser. It makes web pages functional for specific purposes and if disabled for some reason, the content or the functionality of the web page can be limited or unavailable. Here you can find instructions on how to enable activate JavaScript in five most commonly used browsers.

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check url javascript

When the "Warning! In the "Internet Options" window click on the "OK" button to close it. Click on the "Refresh" button of the web browser to refresh the page.

Mozilla Firefox In the address bar, type about:config and press Enter. Click "I'll be careful, I promise" if a warning message appears. In the search box, search for javascript. Click on the "Reload current page" button of the web browser to refresh the page. In the "Settings" section click on the "Show advanced settings When the dialog window opens, look for the "JavaScript" section and select "Allow all sites to run JavaScript recommended ".

Click on the "OK" button to close it. Close the "Settings" tab.JavaScript JS is a lightweight, interpreted, or just-in-time compiled programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.

JavaScript is a prototype-basedmulti-paradigm, single-threaded, dynamic language, supporting object-oriented, imperative, and declarative e. Read more about JavaScript. This section is dedicated to the JavaScript language itself, and not the parts that are specific to Web pages or other host environments. Do not confuse JavaScript with the Java programming language. However, the two programming languages have very different syntax, semantics, and uses.

The complete modules available there are as follows:. A closure is the combination of a function and the lexical environment within which that function was declared. Browse the complete JavaScript reference documentation. Get the latest and greatest from MDN delivered straight to your inbox.

Sign in to enjoy the benefits of an MDN account. Tutorials Learn how to program in JavaScript with guides and tutorials. The complete modules available there are as follows: JavaScript first steps Answers some fundamental questions such as "what is JavaScript? JavaScript building blocks Continues our coverage of JavaScript's key fundamental features, turning our attention to commonly-encountered types of code blocks such as conditional statements, loops, functions, and events.

Introducing JavaScript objects The object-oriented nature of JavaScript is important to understand if you want to go further with your knowledge of the language and write more efficient code, therefore we've provided this module to help you.

Asynchronous JavaScript Discusses asynchronous JavaScript, why it is important, and how it can be used to effectively handle potential blocking operations such as fetching resources from a server.

JavaScript guide JavaScript Guide A much more detailed guide to the JavaScript language, aimed at those with previous programming experience either in JavaScript or another language. JavaScript data structures Overview of available data structures in JavaScript.

Closures A closure is the combination of a function and the lexical environment within which that function was declared. Advanced Inheritance and the prototype chain Explanation of the widely misunderstood and under-estimated prototype-based inheritance. Strict mode Strict mode defines that you can not use any variable before initializing it. JavaScript typed arrays JavaScript typed arrays provide a mechanism for accessing raw binary data.

Memory Management Memory life cycle and garbage collection in JavaScript. Concurrency model and Event Loop JavaScript has a concurrency model based on an "event loop". Reference Browse the complete JavaScript reference documentation.

Expressions and operators Learn more about the behavior of JavaScript's operators instanceoftypeofnewthisthe operator precedenceand more.


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