The best use case I can think of is in caching AJAX responses. Here’s a modified example from Rebecca Murphey’s intro post on the topic: Basically, if the value has already been requested once before it’s returned immediately from the cache. Otherwise, an AJAX request fetches the data and adds it to the cache. The $.when/.then doesn’t care … Read more
You can use Array.filter function to filter out elements of an array based on the return value of a callback function. The callback function runs for every element of the original array. The logic for the callback function here is that if the indexOf value for current item is same as the index, it means the element has been … Read more
You need to access the dataset property: Result:
The curly braces inside backgroundImage property are wrong. Probably you are using webpack along with image files loader, so Background should be already a String: backgroundImage: “url(” + Background + “)” You can also use ES6 string templates as below to achieve the same effect:
Update: June-2021 For a specific case when you need all query params: Update: Sep-2018 You can use URLSearchParams which is simple and has decent (but not complete) browser support. Original You don’t need jQuery for that purpose. You can use just some pure JavaScript: Usage: NOTE: If a parameter is present several times (?foo=lorem&foo=ipsum), you will get the … Read more
Why would you want to convert key strokes to text? Add a button that sends the text inside the textarea to the server when clicked. You can get the text using the value attribute as the poster before has pointed out, or using jQuery’s API:
Update Since Node v12 (April 2019), support for ES modules is enabled by default, and since Node v15 (October 2020) it’s stable (see here). Files including node modules must either end in .mjs or the nearest package.json file must contain “type”: “module”. The Node documentation has a ton more information, also about interop between CommonJS and ES modules. Performance-wise there is always the … Read more
You’re using a colon instead of a comma. Try: You also need to wrap the id in quotes or it will look for a variable called #co There are many more issues here. click isn’t an HTML attribute. You want onclick (which is redundant). Try this: You were trying to call an undefined method. It looks like you were trying … Read more
How to convert 1e+30 to 1000000000000000000000000000000 I want number as it is entered by User do not convert like 1e+30. How can achieve this? Is there any way to display actual digits after parse it to float or int?
What would be a good way to test Javascript on a browser? Should there be a localhost in my computer? and how to create one?