Question

I have a structure like this:

var var1 = { 
     array1 : ['value1','value2', ...],
     array2 : ['value3','value4', ...]
     ...
};

I need a javascript function to search values in this structure, and if exists,
this function will return the name of the array.

Answer 1

function find(value, obj) {
    for (var x in obj) {
        if ($.inArray(value, obj[x]) >= 0) {
            return (x);
        }
    }
}

var var1 = {
    array1: ['value1', 'value2'],
    array2: ['value3', 'value4'],
    array3: ['value5', 'value6']
};

var value = 'value3';

alert(find(value, var1));​    ​

Live DEMO