Home >Web Front-end >JS Tutorial >How to use Object.entries() method in js? (code example)
The Object.entries() method can take an object as a parameter, use the enumerable attribute [key, value] pairs on this object as elements of the array, and then return this string array. Let's take a closer look at how to use the Object.entries() method. [Recommended related video tutorials: JavaScript Tutorial]
##Basic syntax:
Object.entries(obj)Description: 1. obj: represents an object containing enumerable attribute [key, value] pairs2. The order of the attributes in the output array and The object's properties are given in the same order as in the for...in loop.
Usage of Object.entries() method
Let’s take a simple example to see how to use the Object.entries() method. Example 1: All [key, value] pairs that can be listed by the Object.entries() method.var obj ={ name: '小明', age: 20, sex: '男' }; console.log(Object.entries(obj));Description: In this example, an object "obj" is created using three attribute [key, value] pairs, and all attributes of the object [key, value] are returned using the Object.entries() method ]right. Output:
var obj ={ name: '小明', age: 20, sex: '男' }; console.log(Object.entries(obj)[0]); console.log(Object.entries(obj)[2]);Description: In this example, use the Object.entries() method to return the 1st and 3rd attribute [key, value] pairs of the object. Output:
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