jquery遍历筛选数组的几种方法和遍历解析json对象

$().ready(

function(){

var array = [1,2,3,4,5,6,7,8,9];

var filterarray = $.grep(array,function(value){

return value > 5;//筛选出大于5的

});

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

alert(filterarray[i]);

}

for (key in filterarray){

alert(filterarray[key]);

}

}

);

jquery each()筛选遍历数组

$().ready(

function(){

var anObject = {one:1,two:2,three:3};//对json数组each

$.each(anObject,function(name,value) {

alert(name);

alert(value);

});

var anArray = ['one','two','three'];

$.each(anArray,function(n,value){

alert(n);

alert(value);

}

);

}

);

jquery inArray()筛选遍历数组

$().ready(

function(){

var anArray = ['one','two','three'];

var index = $.inArray(‘two’,anArray);

alert(index);//返回该值在数组中的键值，返回1

alert(anArray[index]);//value is two

}

);

jquery map()筛选遍历数组

$().ready(

function(){

var strings = ['0','1','2','3','4','S','6'];

var values = $.map(strings,function(value){

var result = new Number(value);

return isNaN(result) ? null:result;//isNaN:is Not a Number的缩写

}

);

for (key in values) {

alert(values[key]);

}

}

);

jquery遍历解析json对象：

var json = [{dd:'SB',AA:'叔叔',re1:123},{cccc:'dd',lk:'1qw'}];

for(var i=0,l=json.length;i<l;i++){

for(var key in json[i]){

alert(key+’:'+json[i][key]);

}

}