for (var i = 0; i < elems.length; i++) {
(function (lockedInIndex) {
elems[i].addEventListener(‘click‘, function (e) {
e.preventDefault();
alert(‘I am link #‘ + lockedInIndex);
}, ‘false‘);
})(i); //入参
}
使用立即执行函数，可以达到不暴露私有成员的目的
var module1 = (function(){
var _count = 0;
var m1 = function(){
//...
};
var m2 = function(){
//...
};
return {
m1 : m1,
m2 : m2
};
})(); //无法读取_count
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
var a = function() {
alert(12)
var _count=1;
var m1 = function(){
alert(1);
};
var m2 = function(){
alert(2);
};
return {
m1 : m1,
m2 : m2
};
};
var b = a();
b.m1();
var a2 = (function() {
alert(12);
var _count=1;
var m1 = function(){
alert(1);
};
var m2 = function(){
alert(2);
};
return {
m1 : m1,
m2 : m2
};
})();
a2.m2();
</script>
</body>
</html>
function foobar(){
this.foo = function(){
console.log(‘Hello foo‘);
}
this.bar = function(){
console.log(‘Hello bar‘);
}
}
exports.foobar = foobar; //通过export实现与外部通信
var foobar = require(‘./foobar‘).foobar,
test = new foobar();
test.bar();
2.AMD采用异步加载模块，加载完成后通过回调函数实现相应操作，适用与浏览器。
require([‘math‘], function (math) {
math.add(2, 3);
});
原文：http://www.cnblogs.com/grape1211/p/4050209.html