js 题目

var value1 = 0, value2 = 0, value3 = 0;
for ( var i = 1; i <= 3; i++) {
    var i2 = i;
    (function() {
        var i3 = i;
        setTimeout(function() {
            value1 += i;
            value2 += i2;
            value3 += i3;
        }, 1);
    })();
}
setTimeout(function() {
    console.log(value1, value2, value3);
}, 100);

链接：https://cnodejs.org/topic/55145859e26684ed7ff21bd3