Remove duplicate values from JS array
Quick and dirty using jQuery:
javascript
SyntaxError: Unexpected token o in JSON at position 1
The JSON you posted looks fine, however in your code, it is most likely not a JSON string anymore, but already a JavaScript object. This means, no more parsing is necessary. You can test this yourself, e.g. in Chrome’s console: JSON.parse() converts the input into a string. The toString() method of JavaScript objects by default returns [object Object], resulting … Read more
Heroku: “No default language could be detected for this app” error thrown for node app
Heroku has a set of default buildpacks, used when it needs to detect the language of your app.In order to do that detection, it runs the bin/detect command of each of those default buildpacks, until one of them returns a 0 exit code. This is the command for the node buildpack.As you can see, it requires a package.json to … Read more
Getting Error “Form submission canceled because the form is not connected”
Quick answer : append the form to the body. document.body.appendChild(form); Or, if you’re using jQuery as above: $(document.body).append(form); Details : According to the HTML standards, if the form is not associated to the browsing context(document), the form submission will be aborted. HTML SPEC see 4.10.21.3.2 In Chrome 56, this spec was applied. Chrome code diff see @@ -347,9 … Read more
JavaScript TypeError: Cannot read property ‘style’ of null
In your script, this part: must be returning null and you are also attempting to set the display property to an invalid value. There are a couple of possible reasons for this first part to be null. You are running the script too early before the document has been loaded and thus the Noite item can’t be found. There is no Noite item in … Read more
How do I empty an array in JavaScript?
Ways to clear an existing array A: Method 1 (this was my original answer to the question) This code will set the variable A to a new empty array. This is perfect if you don’t have references to the original array A anywhere else because this actually creates a brand new (empty) array. You should be careful with this method because … Read more
How can I refresh a page with jQuery?
Use location.reload(): The reload() function takes an optional parameter that can be set to true to force a reload from the server rather than the cache. The parameter defaults to false, so by default the page may reload from the browser’s cache.
How can I refresh a page with jQuery?
Use location.reload(): The reload() function takes an optional parameter that can be set to true to force a reload from the server rather than the cache. The parameter defaults to false, so by default the page may reload from the browser’s cache.
Get the last item in an array
Update 13 July 2021 The new at() method allows you to use negative indices to mean “from the end”. You can access the last item of locArray like this: At time of update, the at() method is supported in Chrome 92+, FireFox 90+, Node 16 and Deno 1.12+ Older answer In the event that your server serves the same file for … Read more
How to loop through an array containing objects and access their properties
Use forEach its a built-in array function. Array.forEach():