jquery Filters the use of the grep, each, inArray, and map of the array and traverses the JSON object _jquery

Simply record the following several uses:

jquery grep () filter Traversal array

$ (). Ready (
  function () {
    var array = [1,2,3,4,5,6,7,8,9];
    var filterarray = $.grep (array,function (value) {return
      value > 5;//filter for greater than 5
    });
    for (Var i=0;i<filterarray.length;i++) {
      alert (filterarray[i]);
    }
    For (key in Filterarray) {
      alert (Filterarray[key]);
    }
);

jquery each () filter traversal array

$ (). Ready (
  function () {
    var anobject = {one:1,two:2,three:3};//to JSON array 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 () filter Traversal array

$ (). Ready (
  function () {
    var anarray = [' One ', ' two ', ' three '];
    var index = $.inarray (' two ', anarray);
    Alert (index), returns the key value in the array, returns 1
    alert (Anarray[index]);//value is two
  }
);

jquery map () filter Traversal array

$ (). 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 of the abbreviation
      }
    );
    For (key in values) {
      alert (Values[key]);
    }
);

jquery Traversal Parse JSON object 1:

var json = [{dd: ' SB ', AA: ' Dongdong ', 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]);
  }

jquery Traversal Parse JSON object 2

There are JSON objects as follows:
var obj ={"name": "Feng Juan", "Password": "123456″," "Department": "Technical department", "Sex": "female", "old": ";
" Traversal method: For
(var p in obj) {
  str = str+obj[p]+ ', ';
  return str;
}

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