客户端javascript函数

Question

In client side javascript, whats the difference b/w

$(function(){
   ....
});

and

function myFunc() {
   ...
}

(Could not find relevant tutorials on Google)

Answer 1

The first is a DOM ready handler function used in jQuery (a JavaScript library). It is executed when the DOM is fully loaded. Whereas, the second is a simply defined function with name myFunc .

You can read more about JavaScript functions in MDN : https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function .

Answer 2

They are totally different uses of function.
The first on calls function $() with parameter function() {} .
The second defines function myFunc .

Answer 3

$() is a shorthand for jQuery's document.ready syntax: Documentation

Code inside a $() will run when the dom has loaded enough to be accessed/manipulated.

The second example is just a normal function declaration and creates a function named myFunc that can be called with syntax myFunc() later.