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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Sandbox</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<style type="text/css" media="screen">
body { background-color: #000; font: 16px Helvetica, Arial; color: #fff; }
</style>
</head>
<body>
  <pre>
  <code>
  var myArray = [
   { 'name' : 'some name', id: 23131, 'has' : ['dogs'] },
   { 'name' : 'some name 2', id: 8678, 'has' : ['dogs', 'cats'] },
   { 'name' : 'some name 3', id: 2125 , 'has' : ['donkeys', 'goats']},
   { 'name' : 'some name 4', id: 90867, 'has' : ['parrots', 'treasure'] },
   { 'name' : 'some name 5', id: 435458, 'has' : undefined },
];
​
var Find = function(value,obj) {
    var sameArrays = function(arr,arr1) {
        var r;
    
        if(arr.constructor != Array || arr1.constructor != Array) {return r;}
​
        if(arr.length != arr1.length) { return r; }
        
        for (var i = arr.length - 1; i >= 0; i--){
            var value = arr[i],
                item = arr1[i];
                    
            r = Find(value,item);
            
            break;
        };
        
        return r;       
    };
    
    var sameObjects = function(obj,obj1) {
        var r;
        
        if(obj.constructor != Object || obj1.constructor != Object) {return r;}
        
        for(var i in obj) {
            var value = obj[i],
                item = obj1[i];
                    
            r = Find(value,item);
            
            break;
        };
        
        return r;
    };
        
    var inArray = function(value,obj) {
        var r;
                
        if(value.constructor == Array && sameArrays(value,obj)) {
            return obj;
        }
        
        for (var i = obj.length - 1; i >= 0; i--){
            var item = obj[i];
            if( Find(value,item) ) {
                r = item;
                break;
            }
        };
        
        return r;
    };
    
    var inObject = function(value,obj) {
        var r;
        
        if(obj.constructor != Object || typeof obj == 'undefined') {return r;}
        
        if(value.constructor == Object && sameObjects(value,obj)) {
            return obj;
        }
        
        for(var i in obj){
            var item = obj[i];
            if( Find(value,item) ) {
                r = item;
                break;
            }
        }
        
        return r;
    };
    
    var inString = function(value,string) {
        var r,
            valueConstructor = value.constructor;
        
        if(valueConstructor == Object || valueConstructor == Array || typeof string === 'undefined' ) {
            return r;
        }
        string += '';
        if(value == string || value.toString() == string.toString()) {
            r = string;
        }
        else if((valueConstructor == RegExp || valueConstructor == String) && string.match(value)) {
            r = string;
        }
        else if(valueConstructor == Function && value(string) == true) {
            r = string;
        }
        
        return r;
    };
​
    
    if(typeof obj === 'undefined' || typeof value === 'undefined') {
        return;
    }
    
    var _return,
        type = value.constructor,
        objType = obj.constructor;
            
    if(value == obj) {
        _return = obj;
    }
    else if( objType == Array) {
        _return = inArray(value,obj);
    }
    else if (objType == Object ) {
        _return = inObject(value,obj);
    }
    else if ( objType == String || objType == Number ) {
        _return = inString(value,obj);
    }
    
    return _return;
};
(function() {
  var r = [];
  for (var i = myArray.length - 1; i >= 0; i--){
    if( Find(/8/,myArray[i]) ) { r.push(myArray[i]); }
  };
  alert(r.length+' items has the number \'8\' somewhere')
})();
  </code>
  </pre>
​
<script type="text/javascript">
<!-- we run in the footer so no need to use onload -->
%code%
</script>
</body>
</html>
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