copyfromobj
v1.1.0
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The copyfromObj function is designed to create a new object by copying properties from a source object (sourceObj) to a destination object (destinationObj). The resulting object will have keys from the sourceObj but values from the destinationObj.
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Description of copyfromObj Function****** The copyfromObj function is designed to create a new object by copying properties from a source object (sourceObj) to a destination object (destinationObj). The resulting object will have keys from the sourceObj but values from the destinationObj.
Parameters***** sourceObj (any): The source object from which the keys are copied. destinationObj (any): The destination object from which the values are copied. Return Value: The function returns a new object with the same keys as sourceObj and values from destinationObj for those keys. How It Works: The function starts by calling Object.keys(sourceObj), which returns an array of the keys in sourceObj. The reduce method is then used to iterate over each key in this array. The reduce method starts with an empty object (init). For each key, it creates a new key-value pair in init where the key is from sourceObj and the value is from destinationObj. This is achieved using Object.assign, which merges the new key-value pair into init. The reduce method returns the final accumulated object, which is the desired result. Example Usage: javascript Copy code const source = { a: 1, b: 2, c: 3 }; const destination = { a: 'x', b: 'y', c: 'z', d: 'extra' };
const result = copyfromObj(source, destination); console.log(result); // { a: 'x', b: 'y', c: 'z' } Explanation of Example: The source object has keys a, b, and c. The destination object has keys a, b, c, and d. The resulting result object will have keys a, b, and c with values 'x', 'y', and 'z' respectively, taken from the destination object.
Notes:******* If destinationObj does not have a property corresponding to a key in sourceObj, the value for that key in the resulting object will be undefined. The function does not modify either sourceObj or destinationObj; it creates and returns a new object. This function can be useful when you want to map the structure of one object to another while preserving specific values from the destination object.