find Exact in extjs 2.3

How could we find exact match of value in store

i tried below but its not working properly

Code:

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store.find('name','demo')

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Its solved now

Code:

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var val="^demo$";
var newval=new RegExp(val);
store.find('name',newval);

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Can't find the right if there exists special characters ( , ) , ?...

Solution :

Code:

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Ext.override(Ext.data.Store,{
    /**
    * Finds the index of the first matching record in this store by a specific property/value.
    * @param {String} property A property on your objects
    * @param {String/RegExp} value The value to match against
    * @param {Number} startIndex (optional) The index to start searching at
    * @return {Number} The matched index or -1
    */
    findExact: function(property, value, start){
        return this.data.findIndexBy(function(rec){
            return rec.get(property) === value;
        }, this, start);
    }
});
example: store.findExact("name","Finds the index (1)");

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