If I have two different lists, such as:
list1= ['blue', 'green', 'purple']
list2 = ['circle', 'square', 'triangle']
Is there a way to convert them into a JSON object structure by using another list to determine attribute names?
For instance, if the attributes are defined as ['color', 'shape']
Then the result should look like:
final_result = [
{color: 'blue', shape: 'circle'},
{color: 'green', shape: 'square'},
{color: 'purple', shape: 'triangle'}]
Here is a function that I have created which accepts two arguments - the first argument being an array of attributes, and the second argument being an array of arrays representing list items. This function will handle cases where the number of attributes is greater than the number of property items provided:
var create = function(attrList, propertyLists) {
var result = [];
var aLen = attrList.length;
var pLen = propertyLists.length;
if (pLen === 0) {
return result;
}
var itemLength = propertyLists[0].length;
if (itemLength === 0) {
return result;
}
var i, j, obj, key;
for (i = 0; i < itemLength; ++i) {
obj = {};
for(j = 0; j < aLen; ++j) {
key = attrList[j];
if (typeof propertyLists[j] === 'undefined') {
//
continue;
}
obj[key] = propertyLists[j][i];
}
result.push(obj);
}
return result;
};
var a = ['apple', 'orange', 'banana'];
var b= ['red', 'orange', 'yellow'];
var attrs = ['fruit', 'color'];
var jsonObj = create(attrs, [a, b]);
console.log(jsonObj);If you want to achieve this functionality without using underscore or lodash, you can implement it by creating your own methods. Here's how you can do it:
var attributes = ['animal', 'sound'];
var animals = ['dog', 'cat', 'bird'];
var sounds = ['woof', 'meow', 'chirp'];
//Combine arrays into a list of pairs
//(this process would need to be updated with each new array of attribute values)
//MAINTAIN ORDER FOR CORRECT MATCHING
var zipped = zipArrays(animals, sounds);
//Map the zipped list, returning an object based on the keys.
//Remember the order of arrays in the zip operation
//must correspond to the order of attributes in the attributes list
var result = mapZipped(zipped, function(item, index) {
return createObject(attributes, item);
});
console.log(result);
It is essential to ensure that the lists are of the same size and all elements correspond correctly for this method to function effectively. If there is a discrepancy in sizes, the process will encounter errors. Can you provide insight into your data structure?
\\given
listA= ['apple', 'orange', 'banana']
listB= ['red', 'orange', 'yellow']
categories = ['fruit', 'color']
\\implement the following script
var output = [];
for (var index = 0; index < listA.length; index++){
output.push({
categories[0]:listA[index],
categories[1]:listB[index]
});
}
console.log(output);
\\output = [
\\ {fruit: 'apple', color: 'red'},
\\ {fruit: 'orange', color: 'orange'},
\\ {fruit: 'banana', color: 'yellow'}]
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