I am looking for an equivalent to the php.net manual (https://www.php.net/manual/en/) but for javaScript methods and syntax.
Is there a single site that lists out all the javaScript functions available in a clear and concise manner as php.net provides for the PHP language?
Mozilla Developer Central with its Core JavaScript Reference is a good resource. But as JavaScript is object-oriented, the reference is object-oriented too and there is no overview of all functions/methods.
And if you want to did deeper into how JavaScript works, I recommend to read the ECMAScript specification, the standardized language dialects like JavaScript and JScript are derived from.