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Found 1 result

  1. BACKGROUND: I have created two functions of which the return value of one becomes the input value of the other. This other then returns a value that is the desire goal of the two functional procedures. So long as I run these functions separately, they produce the desired output. When I attempt to combine them, however, I inevitably fail. Please find below the successful procedure. I will not bother you with my unsuccessful attempts. INPUT ARRAY: var searchItems = [{category:'Search Podcast',count:'1',target:'キャップチブ'},{category:'Search Newsletter',count:'3',target:'proposition'},{category:'Search Podcast',count:'0',target:'Grammar Captive'},{category:'Search Podcast',count:'1',target:'proposition'},{category:'Search Podcast',count:'1',target:'文法'},{category:'Search Newsletter',count:'1',target:'Grammar Captive'},{category:'Search Podcast',count:'2',target:'proposition'},{category:'Search Podcast',count:'0',target:'Grammar Captive'},{category:'Search Podcast',count:'1',target:'proposition'},{category:'Search Podcast',count:'1',target:'文法'}]; The selectAndList( ) Function function selectAndList(propertyName, inputArr) { var propertyArr = []; inputArr.map(function(item) { propertyArr.push(item[propertyName]); }); return propertyArr; } The countOccurrence( ) Function function countOccurrence(inputArr) { var occurrenceArr = []; var copy = inputArr.slice(0); for (var i = 0; i < inputArr.length; i++) { var myCount = 0; for (var w = 0; w < copy.length; w++) { if (inputArr[i] == copy[w]) { myCount++; delete copy[w]; } } if (myCount > 0) { var a = new Object(); a.value = inputArr[i]; a.count = myCount; occurrenceArr.push(a); } } return occurrenceArr; }; Independent Calls Procedure: var selectedPropertyArr = selectAndList('target', searchItems); var occurrenceArr = countOccurrence(selectedPropertyArr); console.log(occurrenceArr); The result is an array with four objects each containing two properties (count and value) with their respective values. Indeed, it is the desired outcome. QUESTION: How to I combine the above two functions into a single function called countValueFrequency( ) with two arguments including propertyName and inputArr? OK. The following works, but is this the most efficient way of achieving the desired result? function countValueFrequency(propertyName, inputArr) { var propertyArr = []; inputArr.map(function(item) { propertyArr.push(item[propertyName]); }); function countOccurrence(inputArr) { var occurrenceArr = []; var copy = inputArr.slice(0); for (var i = 0; i < inputArr.length; i++) { var myCount = 0; for (var w = 0; w < copy.length; w++) { if (inputArr[i] == copy[w]) { myCount++; delete copy[w]; } } if (myCount > 0) { var a = new Object(); a.value = inputArr[i]; a.count = myCount; occurrenceArr.push(a); } } return occurrenceArr; }; return countOccurrence(propertyArr); } var newSelectedPropertyArr = countValueFrequency('target', searchItems); Roddy
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