jquery遍历数组、对象
1,for循环:
var arr = new Array(13.5,3,4,5,6); for(var i=0;i<arr.length;i++){ arr[i] = arr[i]/2.0; }
2,for,in循环:
var x var mycars = new Array() mycars[0] = "Saab" mycars[1] = "Volvo" mycars[2] = "BMW" for (x in mycars) { document.write(mycars[x] + "<br />") }
2.1for,in 循环遍历对象
var data = {1: "食品标准物质", 2: "环境标准物质", 3: "职业卫生标准物质", 4: "仪器鉴定标准物质", 5: "药典及对照品", 6: "进口标准品", 7: "地质矿产标准物质", 8: "其他标准物质", 9: "化学试剂"};
for(var i in data){ console.log(i);//索引 console.log(data[i]);//值 }
3,each遍历一维数组:
var arr=new Array(); arr=["aaa","bbb","ccc"]; $.each(arr,function(index,value){ alert(i+"..."+value); });
3.1each遍历对象:
var data = {1: "食品标准物质", 2: "环境标准物质", 3: "职业卫生标准物质", 4: "仪器鉴定标准物质", 5: "药典及对照品", 6: "进口标准品", 7: "地质矿产标准物质", 8: "其他标准物质", 9: "化学试剂"}; $.each(data,function(i,n){ console.log('索引' + i + ';对应值为:' + n +';'); });
4,each遍历二维数组:
$(function () { $.each([["aaa", "bbb", "ccc"], ["ddd", "eee", "fff"], ["ggg", "hhh", "iii"]], function (index, item) { alert(index + "..." + item); //输出0...aaa,bbb,ccc 1...ddd,eee,fff 2...ggg,hhh,iii 这时的index为数组下标,item相当于取这二维数组中的每一个数组 $.each(item, function (index, itemobj) { alert(index + "....." + itemobj); }); }); //输出0...aaa,bbb,ccc 0...aaa 1...bbb 2...cccc 1...ddd,eee,fff 0...ddd 1...eee 2...fff 2...ggg,hhh,iii 0...ggg 1...hhh 2...iii });