var arr = [];===================> var arr = new Array();//create a array var obj = {};===================> var obj = new Object();//create a object; var obj ={ oo:"123", kk:function(){} }//create a object with a 'oo' attribute and 'kk' method.
正解,这是javascript中的对象相关的东西
var arr = [];===================> var arr = new Array();//create a array var obj = {};===================> var obj = new Object();//create a object; var obj ={ oo:"123", kk:function(){} }//create a object with a 'oo' attribute and 'kk' method.
var obj = {};===================> var obj = new Object();//create a object;
var obj ={
oo:"123",
kk:function(){}
}//create a object with a 'oo' attribute and 'kk' method.
var obj = {};===================> var obj = new Object();//create a object;
var obj ={
oo:"123",
kk:function(){}
}//create a object with a 'oo' attribute and 'kk' method.