先用typeof判断类型,然后parseFloat转换,判断结构是否NaN。
JS获取数组最大值、最小值及长度的方法:
最小值:Array.prototype.min = function() {
var min = this[0]var len = this.lengthfor (var i = 1i <leni++){if (this[i] <min){min = this[i]}}return min}最大值:
Array.prototype.max = function() {var max = this[0]var len = this.lengthfor (var i = 1i <leni++){if (this[i] >max) {max = this[i]}}return max}数组长度:
var array = new array(1,2,3,2,4,55,2)alert(array.length)//输出7本文实例讲述了JS获取数组最大值、最小值及长度的方法。分享给大家供大家参考,具体如下://最小值
Array.prototype.min
=
function()
{
var
min
=
this[0]
var
len
=
this.length
for
(var
i
=
1
i
<
len
i++){
if
(this[i]
<
min){
min
=
this[i]
}
}
return
min
}
//最大值
Array.prototype.max
=
function()
{
var
max
=
this[0]
var
len
=
this.length
for
(var
i
=
1
i
<
len
i++){
if
(this[i]
>
max)
{
max
=
this[i]
}
}
return
max
}
//数组长度
var
array
=
new
array(1,2,3,2,4,55,2)
alert(array.length)//输出7
希望本文所述对大家JavaScript程序设计有所帮助。