alert出数组中的随即值代码

/* 

* 随即alert出数组的值 

* a表示数组 

*/ 

function alert1(a) 

{ 

var alength = a.length; 

if (alength > 1) 

{ 

var r = random1(0,alength); 

alert(a[r]); 

a[r] = -1; 

var temp = Array(alength-1); 

var t = false; 

for(var i = 0; i<a.length; i++) 

{ 

if ( i == r){ 

t = true; 

} 

else{ 

if (t == false){ 

temp[i] = a[i]; 

}else{ 

temp[i-1] = a[i]; 

} 

} 



} 

alert1(temp); 

} 

else 

{ 

alert(a[0]); 

} 

}

/* 

* 

* 随即的到min（包含）和max（不包含）之间的值 

*/ 

function random1(min, max){ 

return Math.floor(min + ((Math.random() * 10) % (max - min))); 

}