references.js

(function () {
    var a = window.a = {
    	name : 'a'
    };
    
    var aStr = window.aStr = 'stringA';
    
    window.a.name = 'b';
    window.aStr = 'stringB';
    
    var test = function (a, aStr) {
    	console.log('timeout: ', a.name);
    	console.log('timeout: ', aStr);
    };
    // setTimeout(test, 100);
    setTimeout(function () {
    	test(a, aStr);
    }, 100);
    console.log('outer obj：', a.name);
    console.log('inner string：', aStr);
})();
console.log('outer obj', a.name);
console.log('outer string：', aStr);


//闭包：a,  inner: c, outer: c, timeout: a 
//闭包：stringA,  inner: stringC, outer: stringC, timeout: stringC