摘要：
1varkeys=[],nums=[],result=[];2for(vari=1;i<=800;i++){3varkey=Math.random();4keys.push(key);5nums[key]=i;6}7keys.sort();8for(vari=0;i<keys.length;i++){9result.push(nums[keys[i]])10}11console.log(result);12console.log(result.length); 阅读全文
摘要：
1varstr="今天星期"+"日一二三四五六".charAt(newDate().getDay());2console.log(str); 阅读全文
摘要：
1//splice(起始位置，要删除的个数，要插入的数据)2varcolors=["red","green","blue"];3varremoved=colors.splice(0,1);4console.log(colors);5console.log(removed);67removed=colors.splice(1,0,"yellow","orange");8console.log(colors);9console.log(removed);1011removed=colors.spli 阅读全文