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Closed 10 years ago.
Possible Duplicate:
Creating a new Location object in javascript
If the user inputs a string that is a URL, what's the easiest way to turn it into a Location object (like window.location) so I can use methods and properties like obj.hostname?
Don't know if you can create a Location object, but this article explains how to use an anchor tag for the same effect:
http://james.padolsey.com/javascript/parsing-urls-with-the-dom/
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Get all instances of class in Javascript
(6 answers)
Can I get all instances for a prototype in javascript?
(2 answers)
Closed 1 year ago.
This is not a browser or DOM specific question. If a number of child objects are instantiated from a JavaScript class, is there an easy way to iterate through those objects? I know there might be some way to do this through the Object prototype chain, but I am not sure how to do this or how to do it efficiently. Would this be different in Node versus a browser window?
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How is almost everything in Javascript an object?
(6 answers)
Why does a primitive variable act like an Object? [duplicate]
(3 answers)
javascript: do primitive strings have methods?
(2 answers)
Closed 2 years ago.
I have this question in mind since I started learning JavaScript last month.
What I have tried?: I researched for it online almost on all good sites but didn't get satisfactory answer in laymans language.
Question: When I create variable let suppose
let name = "mit"
name.toUpperCase()
I am using dot notation to access the method here and I know we use it for something in object. I was confused if the browser creates different object for name variable (which is of string data type here) or what?
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How can I get query string values in JavaScript?
(73 answers)
Get the values from the "GET" parameters (JavaScript) [duplicate]
(63 answers)
Closed 2 years ago.
I have a link (string) which contains a filename. I need to extract the format of the filename but I am unfortunately not able to do that. An example link is given below
www.xyz.com/private/videos/89FDJKDKFgrFTD-MUyKE9Sn/source?file-name=SampleAudio_0.4mb.mp3&token=exp=1591202847~acl=/private/videos/8OJFREFJOIJFREJ-MUyKE9Sn/source*~hmac=aef161514cdfodsjfodsjorjef081b4c849b8c29c6a37339803866badfd4a16
I have tried multiple ways like to look for .(dot) until & but since I am new to this I couldn't make this work. I got the filename through name=([^&]*) but could not get the extension. Is there a way to do this?
You can use this regex:
(?:file-name=.*)(\..+)(?:&)
Also see working example: https://regex101.com/r/CJDXLW/2
This question already has answers here:
How can I check if an object is an array? [duplicate]
(51 answers)
Closed 6 years ago.
If so, how can I detect the difference between them.
I've noticed that you can't do typeof Array hence I'm looking for different solution to see the difference.
You can detect if a variable is an array by using Array.isArray(yourArray).
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
javascript test for existence of nested object key
In JavaScript, is there an easier way to check if a property of a property exists?
I've been searching for an elegant way to verify if the entire object path is defined.
For example: person.positions.values[0].company.name
On every step of the way, after the person, it can be undefined.
Can this be done without actually going through them one by one?
Thank you.