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Ask a question- 3 votes1 answers23 views
How can I get keyboard keys codes ?
Im trying to detect keys from keyboard, ecpeially symbol '@'. I don't need to get string value via TextField Widget onChange listener or use RawKeyboardListener ...
- 3 votes3 answers38 views
How to remove duplicates values from array in Javascript
I have a very simple JavaScript array that may or may not contain duplicates. var names = ["Mike","Nancy","Adam","John","Nancy","Carl"]; I need to remove the duplicates ...
- 2 votes2 answers20 views
How to detect browser or tab closing ?
Is there any JavaScript code to detect if the browser or a browser tab is being closed ?
- 2 votes1 answers16 views
How to check whether a string contains a substring in JavaScript?
What is a reasonable way to check a string contains a substring or not?
- 0 votes2 answers12 views
How to remove a particular element from an array in JavaScript ?
Is there a simple way to remove a specific element from an array?
- 0 votes2 answers10 views
How to store Objects in localStorage ?
I'd like to store a JavaScript object in localStorage, but my object is being converted to a string.
- 0 votes1 answers6 views
How to check if an array includes an object in JavaScript?
What is the most efficient way to find out if a JavaScript array contains an object?
- 0 votes1 answers5 views
What's the difference between using “let” and “var” ?
When should let be used over var?
- 0 votes1 answers8 views
How to detect a mobile device?
I would like to run a different script if the browser is on a handheld device.
- 0 votes1 answers12 views
How to compare arrays in JavaScript ?
I'd like to compare two arrays... Just true if they are identical, and false if not.
- 0 votes1 answers7 views
How to validate an email address in JavaScript ?
How can I check validity of email address that I am typing in JavaScript?
- 0 votes1 answers11 views
How to redirect to another webpage?
How can I redirect the user from one page to another using pure JavaScript?
- 0 votes1 answers6 views
What is difference between querySelectorAll and getElementsBy* methods ?
The reason I ask is because I am trying to change the style of all elements using getElementsByClassName. See below. //doesn't work document.getElementsByClass...
- 0 votes1 answers6 views
How to return the response from an asynchronous call ?
I have a function, which makes an Ajax request. How can I return the response from that function?
- 1 votes1 answers13 views
What is a “closure” in JavaScript?
Can you explain in your own words what is CLOSURE in JS ?
- 1 votes2 answers25 views
How to write a sum method which will work properly when invoked using either syntax below ?
console.log(sum(2,3)); // Outputs 5 console.log(sum(2)(3)); // Outputs 5 `
- 2 votes1 answers15 views
How to write a simple function to determine palindrome
How to write a simple function (less than 160 characters) that returns a boolean indicating whether or not a string is a palindrome?
- 1 votes1 answers13 views
Why setTimeout with 0 delay does not work imminently in javascript
There is clouser function with execures 4 line fo code. The order of execution does not work as expected. (function() { console.log(1); setTimeout(funct...
- 0 votes1 answers10 views
How to determine an integer in javascript
What is the best way to write a function isInteger(x) that determines if x is an integer.
- 0 votes1 answers9 views
Why floating numbers cannot be compared with each other in Javascript
I would like to compare two floating numbers in javascript but it does not work. Here is the code console.log(0.1 + 0.2); console.log(0.1 + 0.2 == 0.3); // lo...
