jquery 对 Json 的各种遍历

grep

<script type='text/javascript' src="/jquery.js"></script>
<script type="text/javascript">
$().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]);
}
}
);
</script>

each  遍历json对象：

<script type='text/javascript' src="/jquery.js"></script>
<script type="text/javascript">
$().ready(
function(){
var anObject = {one:1,two:2,three:3};//对json数组each
$.each(anObject,function(name,value) {  //对于$.each要重点掌握
alert(name);
alert(value);
});
var anArray = ['one','two','three'];
$.each(anArray,function(n,value){
alert(n);
alert(value);
}
);
}
);
</script>

 inArray

 

<script type='text/javascript' src="/jquery.js"></script>
<script type="text/javascript">
$().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
}
);
</script>