js里面的Object基本

1 1,Object基本格式2 <script type="text/javascript">3 ????var o = {};4 ????var o = {a:‘foo‘,b:42,c:{}}5 ????console.log(o)

</script>

2,Object基本格式<script type="text/javascript"> ???????var a = ‘foo‘, ???????????b = 42, ???????????c = {}; ???????var o = { ???????????a: a, ???????????b: b, ???????????c: c ???????} ???????console.log(o)

</script>

1 3,Object中的[]不明白2 <script type="text/javascript">3 ????????var prop = ‘foo‘;4 ????????var o = {5 ????????????[prop]:‘Hello‘,6 ????????????[‘b‘+‘ar‘]:‘World‘7 ????????}8 ????????console.log(o)

</script>

4,Object对象属性的访问<script type="text/javascript"> ???let obj = {foo:"bar",age:42,baz:{myProp:12}, ???????}// 创建对象后，可以读取或者修改它。对象属性可以用下标小圆点标记或者方括号标记访问。 object.property ??object[‘property‘]console.log(obj.foo)console.log(obj[‘foo‘])obj.foo = "baz"; ?// 修改 对象属性的值console.log(obj)

</script>