HTML anchor link – href and onclick both?

Just return true instead? The return value from the onClick code is what determines whether the link’s inherent clicked action is processed or not – returning false means that it isn’t processed, but if you return true then the browser will proceed to process it after your function returns and go to the proper anchor.

typescript – cloning object

Solving The Specific Issue You can use a type assertion to tell the compiler that you know better: Cloning Bear in mind that sometimes it is better to write your own mapping – rather than being totally dynamic. However, there are a few “cloning” tricks you can use that give you difference effects. I will … Read more

How to check for an undefined or null variable in JavaScript?

You have to differentiate between cases: Variables can be undefined or undeclared. You’ll get an error if you access an undeclared variable in any context other than typeof. A variable that has been declared but not initialized is undefined. Undefined properties , like someExistingObj.someUndefProperty. An undefined property doesn’t yield an error and simply returns undefined, which, when converted to a boolean, evaluates to false. So, … Read more