Javascript

javascript

What is the difference between == and == in JavaScript?

JavaScript variables are loosely/dynamically typed and the language doesn’t care how a value is declared or changed: Seemingly different values equate to true when compared with == (loose or abstract equality) because JavaScript (effectively) converts each to a string representation before comparison:

What is the difference between date and time in JavaScript?

Date and time in JavaScript are represented with the Date object. We can’t create “only date” or “only time”: Date objects always carry both. Months are counted from zero (yes, January is a zero month).

Is JavaScript time measured in milliseconds?

Summary. Note that unlike many other systems, timestamps in JavaScript are in milliseconds, not in seconds. Also, sometimes we need more precise time measurements. JavaScript itself does not have a way to measure time in microseconds (1 millionth of a second), but most environments provide it.

Why do we use single quotes in JavaScript?

It helps to keep the number of escapes low. For instance, when you are working with HTML content inside your strings, it is easier to use single quotes so that you dont have to escape all double quotes around the attributes. Show activity on this post. When using CoffeeScript I use double quotes.

How to set a timer in JavaScript?

window.setTimeout () allows you to specify that a piece of JavaScript code (called an expression) will be run a specified number of milliseconds from when the setTimeout () method was called. The general syntax of the method is: where expression is the JavaScript code to run after timeout milliseconds have elapsed.

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