/**

* Created by liufengkai on 16/6/25.

*/

var age = 20;

if (age >= 18) {

console.log('adult');

} else {

console.log('child');

}

var x = 0;

for (var i = 0; i < 10000; i++) {

x += i;

}

console.log('x:' + x);

var lfk = {

name: 'lfkdsk',

index: 10

};

for (var key in lfk) {

console.log(key);

}

x = 0;

var n = 99;

while (n > 0) {

x += n;

n -= 2;

}

console.log("x: " + x);

var m = new Map([['sssss', 'ddd']]);

m.set('lfkdsk', 1111);

m.set('lfkddd', 9090);

// [].forEach.call(m, function (element) {

// console.log(element);

// });

m.forEach(function (value) {

console.log("value: " + value);

});

/**

* set 不支持重复

* */

var SetExp = new Set([1, 1, 2, 3]);

console.log(SetExp);

var a = [1, 2, 3];

/**

* 迭代器 for of

* for each

* for in(不建议会把另外的属性加入)

*/