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I need to implement a randomization from JSON result.
The format of the JSON is two objects:
result:
Question(object)
[Object { id="4c6e9a41470b19_96235904", more...}, Object { id="4c784e6e928868_58699409", more...}, Object { id="4c6ecd074662c5_02703822", more...}, 6 more...] Topic(object)
[Object { id="3jhf3533279827_23424234", more...}, Object { id="4634663466cvv5_43235236", more...}, Object { id="47hf3892735298_08476548", more...}, 2 more...] I want to randomize the order of the objects inside the question object and the topic objects.
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The first and simplest way to shuffle an array in JavaScript is to provide a custom function to a . sort() . const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; const shuffledArray = array. sort((a, b) => 0.5 - Math.
Shuffle Array using Random Class We can iterate through the array elements in a for loop. Then, we use the Random class to generate a random index number. Then swap the current index element with the randomly generated index element. At the end of the for loop, we will have a randomly shuffled array.
In contrary to languages like Ruby and PHP, JavaScript does not have an built-in method of shuffling the array. However, there is a method that allows shuffling the sequence. Let's discuss a particular case. Shuffling an array of values is considered one of the oldest problems in computer science.
You could use a Fisher-Yates-Durstenfeld shuffle:
var shuffledQuestionArray = shuffle(yourQuestionArray); var shuffledTopicArray = shuffle(yourTopicArray); // ... function shuffle(sourceArray) { for (var i = 0; i < sourceArray.length - 1; i++) { var j = i + Math.floor(Math.random() * (sourceArray.length - i)); var temp = sourceArray[j]; sourceArray[j] = sourceArray[i]; sourceArray[i] = temp; } return sourceArray; } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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