I need help with identifying elements in an object:
object["key1"] = "text1"
object["key2"] = "text2"
object["key3"] = "text1"
object["key4"] = "text3"
How can I alert the elements that have the same values (such as text1, text2, etc.)?
For the provided example, the output should be object["key1"] and object["key2"].
Thank you
To transform your object into a different format where properties become values and values become properties, you can use the following code snippet:
var swappedObject = {};
for (var prop in originalObject) {
if (!(originalObject[prop] in swappedObject)) {
swappedObject[originalObject[prop]] = [];
}
swappedObject[originalObject[prop]].push(prop);
}
After executing this code, your object will look like this:
{
'value1': ['prop1', 'prop3'],
'value2': ['prop2'],
'value3': ['prop4']
}
Subsequently, you can identify any values that have multiple keys associated with them by running the following code:
for (var value in swappedObject) {
if (swappedObject[value].length > 1) {
alert(swappedObject[value].join(', '));
}
}
After organizing the array, I've taken into account that you may want to trigger an alert or execute a function only once for each duplicate element. CAUTION: Sorting may become resource-intensive with larger arrays http://jsfiddle.net/SPQJ7/ The linked jsfiddle demonstration is set up and functional with multiple repeated elements
I made some revisions to my code
http://jsfiddle.net/HerrSerker/LAnRt/
My updated script focuses on checking for equality rather than identity in complex values (refer to the foo example)
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