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This is just trivia / curiosity as I stumble across this situation a number of times.
Is it possible to shorten/destructure the following types of assignments?
newValue = value.value
Naively, I tried newValue = {value} but it doesn't work, as that syntax is normally used to destructure variables from objects with the same key name.
426
The object destructuring is a useful JavaScript feature to extract properties from objects and bind them to variables. What's better, object destructuring can extract multiple properties in one statement, can access properties from nested objects, and can set a default value if the property doesn't exist.
In Arrays: In Arrays, values of corresponding elements get stored in the variables. Example 1: In order to give default values in arrays when applying the destructuring concept in arrays, we need to initialize values with some value. In this way the default values will be assigned to the variables.
Destructuring in Arrays. To destructure an array in JavaScript, we use the square brackets [] to store the variable name which will be assigned to the name of the array storing the element. const [var1, var2, ...]
Use this syntax to destructure and rename the property, this will get the value from object and rename it to variable newValue
var {value: newValue} = value
var value = {value: 5}
var {value: newValue} = value
console.log(newValue)You could use the object property assignment pattern [YDKJS: ES6 & Beyond] with a destructuring assignment.
var value = { value: 42 },
{ value: newValue } = value;
console.log(newValue);If not used as expression, like with var, let or const, you need parentheses to distinguish the braces from a block statement.
var value = { value: 42 },
newValue;
({ value: newValue } = value);
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