1011js学习总结

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var score=[];
   for(var i=0;i<3;i++){
       var num=prompt("请输入成绩");
       score.push(num);
       document.write("第"+ (i+1)+"成绩是" + +num+"<br>")
    }
    
    var max=score[0];
    var min=score[1];
    var sum=0;
    for(var i=0;i<score.length;i++){
        if(max<score[i]){
            max=score[i];
            }
            if(min>score[i]){
                min=score[i]
                }
                sum=+sum + +score[i];
        }
        document.write("最高分："+max +"最低分："+min +"<br>"+"平均分："+(sum/score.length));
 

 var aa=["aa","bb","cc","dd"];
   aa.push("ee")
   console.log(aa.length);


 var aa=["aa","bb","cc","dd"];
  var bb=["qq","rr"];
 console.log(aa.concat(bb));
 
 
var aa=[2,6,3,7,1];
 console.log(aa.sort());
 console.log(aa.sort(function(a,b){return(b-a)}));

var aa=["aa","bb","cc","dd"];
 console.log(aa.join("-"));   
练习2

var aa=new Array();
  aa[0]="我";
  aa[1]="爱";
  aa[2]="你";
document.write(aa+"<br>");  
var bb=["我","爱","你"];
document.write(bb.reverse()+"<br>");
var cc=[2,3,4,5,6,7,8,9,10,11];
var dd=[];
document.write(dd.concat(cc));

1011js学习总结

标签：i++   logs   nbsp   cti   ++   sum   console   doc   练习   

原文地址：http://www.cnblogs.com/lxy151/p/7651647.html