Map An Array In Javascript
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Map An Array In Javascript
I believe you are trying to iterate through the array of objects in this.undergroundgeojson.features? Entries() returns an iterator with the [key, value] pairs in a map: Foreach() calls a function for each key/value pair in a map:
Let finalarray = arr.map(callback( currentvalue[, index[, array]]), arg) following are the meanings of these parameters : Is there like a quick way to get javascript map values as an array? Get() gets the value for a key in a map:
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And one of the most useful is the map () method. We can use this to reduce the given array in an array that has no duplicate values. The final returned map uses the unique values from the test function as keys, which can be used to get the array of elements in each group. .map() can only be used on arrays.
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