Question

There is one javascript file http://v2.jiathis.com/code_mini/jia.js, in order for good speed , I want to load it asynchronous, how to do this by jquery ?

Answer 1

.getScript() can help you the things Getscript:
load a JavaScript file from the server using a GET HTTP request, then execute it.

The script is executed in the global context, so it can refer to other variables and use jQuery functions. Included scripts can have some impact on the current page

$.getScript("yourJavascriptUrl", function(data, textStatus, jqxhr) {
   console.log(data); //data returned
   console.log(textStatus); //success
   console.log(jqxhr.status); //200
   console.log('Load was performed.');
});