github.com/requirejs/requirejs
https://github.com/requirejs/requirejs/blob/master/require.js
文件结构：
index.html
js
main.js
jquery-3.1.0.min.js
check.js
error.js
require.js
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>requirejs</title>
</head>
<body>
</body>
<script src="js/require.js" data-main="js/main.js"></script>
</html>js/main.js
require.config({
paths:{
jquery:'jquery-3.1.0.min'
}
})
requirejs(['jquery', 'error'], function($, error){
$('body').css('background-color', 'red');
error.isEmpty();
})
/*
requirejs(['jquery', 'check'], function($, check){
$('body').css('background-color', 'red');
check.isEmpty();
})check.js
define(['jquery'], function($){
return{
isEmpty: function(){
alert(666)
},
checkLength:function(){},
isEqual:function(){}
}
})error.js
define(['jquery'], function($){
return{
isEmpty: function(){
alert(777)
},
checkLength:function(){},
isEqual:function(){}
}
})