一维数组的遍历
<script> //循环遍历数组 var animals = ["cat",'dog','human','whale','seal'];
var animalString = "";
for(var i = 0;i<animals.length;i++){
animalString += animals[i] + " ";
} alert(animalString); //输出数组里的每个项
</script>遍历二维数组
<script> var arr=[[0,0,0,0,0,0],[0,0,1,0,0,0],[0,2,0,3,0,0],[0,0,0,0,0,0]];
for(var i=0;i<arr.length;i++){
//遍历每一个具体的值 for(var j=0;j<arr[i].length;j++){
document.writeln(arr[i][j]+" ");
} document.writeln("<br/>");
} </script>