javascript - Different types of methods to read JSON -

i want load json when page loading. found 2 methods difference between following 2 methods read json.

<script type="text/javascript" src="assets/json/mainpage.json"></script> //code 

another method

$.getjson("assets/json/mainpage.json") 

you did not find 2 different methods.

the first version not how works.

you can load javascript object using object notation using script tag,

<script type="text/javascript" src="assets/json/mainpage.js"></script>

could contain

var myjsobject = { "key":"value" }; 

whereas second method call returns (static or generated) content like

{ "key":"value" } 

for example

$.getjson("assets/json/mainpage.php"); 

would call server process do

header("content-type: application/json"); echo '{ "key":"value" }';