javascript基础之数组一

<script type="text/javascript">
//求数组中最大的数
var arr=[123,456,789,657,432,564];
var arrMax= getMaxValue(arr);
alert(arrMax);
function getMaxValue(arrInt)
{
    var max=arrInt[0];
    for(var i=0;i<arr.length;i++)
    {
        if(arrInt[i] > max)
        {
                     max=arrInt[i];
        }
    }
    return max;
}
</script>

结果：789

//数组转换为字符串<script type="text/javascript">
var names=["京客隆","问候语","时间的话","搜舞蹈","圣诞节快乐"]
var named=getName(names);
alert(named);
function getName(strName)
{
    var str="";
    for(var i=0; i<strName.length;i++)
    {
        str=str+strName[i]+"|";
    }
    return str.substring(0,str.length-1);
}
</script>

结果：京客隆|问候语|时间的话|搜舞蹈|圣诞节快乐

 //去掉id为1的对象组
<script type="text/javascript">
        var modJson=[{id:"1",name:"wwee",addr:"3qw"},{id:"2",name:"user",addr:"kkk"},{id:"3",name:"we42",addr:"23ds"}];
        for (var i = 0; i < modJson.length; i++) {
                    if (modJson[i].id == 1) {
                        modJson.splice($.inArray(modJson[i], modJson), 1);//去掉id为1的对象组
                    }

        }
        console.info(modJson);
    </script>

//数组_顺序翻转
<script type="text/javascript">
var names=["京客隆","问候语","时间的话","搜舞蹈","huahua"]
getName(names);
alert(names);
function getName(strName)
{
    var str;
    for(var i=0; i<strName.length/2;i++)
    {
        str=strName[i];
        strName[i]=strName[strName.length-1-i];
        strName[strName.length-1-i]=str;
    }

}
</script>

结果为：huahua,搜舞蹈,时间的话,问候语,京客隆

//for和in的用法
<script type="text/javascript">

var mycars=new Array("any","mlik","yli");
var mycars1=new Array("df","w3","fgf");
for(var i=0;i<mycars.length;i++)
{
document.write(mycars[i]+"<br/>");
}
for(x in mycars1)
{
document.write(mycars1[x]+"<br/>")
}

document.write(mycars.concat(mycars1))//concat() 方法用于连接两个或多个数组。
</script>

结果：

any
mlik
yli
df
w3
fgf
any,mlik,yli,df,w3,fgf

<script>
var caser=new Array("我是谁","你是谁","他是谁");//声明变量caser为数组类型
for(var i=0;i<caser.length;i++)
{
    document.write(caser[i]+"<br>");
    }

    var unn=new Array();
    var j;
    unn[0]="123";
    unn[1]="456";
    unn[2]="789";
    for(j=0; j<unn.length;j++)
    {
        document.write(unn[j]);
        }

</script>