What does ${} (dollar sign and curly braces) mean in a string in ...
Mar 7, 2016 · Functionally, it looks like it allows you to nest a variable inside a string without doing concatenation using the + operator. I'm looking for documentation on this feature. I'm looking …
Why would a JavaScript variable start with a dollar sign?
Very common use in jQuery is to distinguish jQuery objects stored in variables from other variables.. For example, I would define:
How can I check for "undefined" in JavaScript? - Stack Overflow
How to check a not-defined variable in JavaScript. 205. Whether a variable is undefined. 120.
++someVariable vs. someVariable++ in JavaScript - Stack Overflow
Aug 12, 2010 · ++x (pre-increment) means "increment the variable; the value of the expression is the final value" x++ (post-increment) means "remember the original value, then increment the …
How to access Session variables and set them in javascript?
Mar 20, 2013 · Javascript can not directly set session values. For setting session values from javascript I do ajax call as follows. Check Online. At ASPx file or html, <script …
How do you use the ? : (conditional) operator in JavaScript?
Jun 7, 2011 · It's a little hard to google when all you have are symbols ;) The terms to use are "JavaScript conditional operator". If you see any more funny symbols in JavaScript, you should …
javascript - Declaring vs Initializing a variable? - Stack Overflow
Jul 30, 2015 · A variable declaration (e.g., var foo) causes that variable to be created as soon as the "lexical environment" is instantiated. For example, if that variable were defined within a …
Define a global variable in a JavaScript function - Stack Overflow
With regards to JavaScript in a browser environment, a global variable and a property of window are synonymous. Either way, the semantic distinction you're making is clear, so I don't mind un …
Can I use a variable as variable name in JavaScript?
Sep 9, 2018 · I am trying to use a variable as another variables name. For example, I have the following: var dynamicname = 'name1_' And I am trying to set it as the name of a new variable …
Static variables in JavaScript - Stack Overflow
Oct 8, 2009 · There is no such thing as an static variable in Javascript. This language is prototype-based object orientated, so there are no classes, but prototypes from where objects …