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I'm using this method to make artificial 'hashmaps' in javascript. All I am aiming for is key|value pairs, the actual run time is not important. The method below works fine.
Are there any other ways to loop through this?
for (var i in a_hashMap[i]) { console.log('Key is: ' + i + '. Value is: ' + a_hashMap[i]); } I run into a problem where this outputs a bunch of undefined keys after the first key, when the array only contains one entry. I have a feeling it is because the code is within a loop which uses i, even though when I follow in debug it shouldn't be happening. I also cannot change i as the for loop seems to not understand the replaced var at all.
Anyone any ideas?
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Iterate through a Map using JavaScript # Use the forEach() method to iterate over a Map object. The forEach method takes a function that gets invoked for each key/value pair in the Map , in insertion order. The function gets passed the value, key and the Map object on each iteration.
While JavaScript doesn't have a native Hashtable class, it does have native Objects and Hashmaps(Map) that offer similar functionality when it comes to organizing key/value pairs.
for (var i in a_hashmap[i]) is not correct. It should be
for (var i in a_hashmap) which means "loop over the properties of a_hashmap, assigning each property name in turn to i"
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