How does =, ==, and === differ in JavaScript?
= is for assignment
var a = 50 // int
var b = "50" // string
== is for equality test
a == b // returns true
=== tests equality of type and value It will convert int to string and the value will be true
a === b // returns false
This will not cast type. So 50 is not equal to "50".
Before learning jQuery, you should learn HTML, CSS, JavaScript, and learn how to debug JavaScript. You should also be familiar with JSON. Knowing XML will also be helpful.
Suppose you need to call some JavaScript code on your page such as:
<script src"somecode.js"></script>
However, the somecode.js is different based on other parameters on your page. So you would need to pass a variable rather than the static string to the src. If you just replace somecode.js, with a variable name, you code will not be called.
The following example shows how you can manipulate DOM to define src so that your code runs.
JavaScript code not running on Brackets.
/bin/sh: node: command not found
Program exited with status code of 127
Brackets cannot find node binary file.
Open terminal and type the following commands and note the addressed returned:
which node
which npm
Click on Node.js > Configuration... from the main menu. Then copy/paste the paths to binary files you retrieved in the command line. For example:
Full-stack is a complete JavaScript solution which involves JavaScript on both client-side and server-side. There are many full-stack solutions but MEAN stack is the most widely used solution. There are many different variations of the full-stack but it essentially involves: