How to use the has function from object-path

Find comprehensive JavaScript object-path.has code examples handpicked from public code repositorys.

object-path.has is a method that determines whether a specific property or a nested property exists in an object or not.

index.js

GitHub: rogall/companion-module-neoid-generic

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	if (subscription.variableName === '') {
		return
	}
	if (subscription.subpath === '') {
		this.setVariable(subscription.variableName, typeof msgValue === 'object' ? JSON.stringify(msgValue) : msgValue)
	} else if (typeof msgValue === 'object' && objectPath.has(msgValue, subscription.subpath)) {
		let value = objectPath.get(msgValue, subscription.subpath)
		this.setVariable(subscription.variableName, typeof value === 'object' ? JSON.stringify(value) : value)
	}
})

+ 28 other calls in file

Metadata.js

GitHub: eluv-io/elv-utils-js

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const arrayToPath = arr => `/${arr.join('/')}`


const pathDesc = path => path ? `path '${path}' ` : ''


const pathExists = ({metadata, path}) => objectPath.has(metadata, pathToArray({path}))


const pathPieceIsInt = str => parseInt(str, 10).toString() === str


// convert path in slash format to an array for use with object-path

How does object-path.has work?

object-path.has is a utility function that checks whether an object has a property at a given path. Internally, it uses a reduce function to iterate over each segment of the path and check if the property exists. If the property is found, the function returns true. If the property is not found, the function returns false. It uses the hasOwnProperty method to check if the property belongs to the object itself, rather than a prototype in the object's inheritance chain.

Ai Example

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const objectPath = require("object-path");

const obj = {
  a: {
    b: {
      c: "Hello World",
    },
  },
};

const result = objectPath.has(obj, "a.b.c");
console.log(result); // true

const result2 = objectPath.has(obj, "a.b.d");
console.log(result2); // false

In this example, we first import object-path. We then create an object obj with a nested property a.b.c that has the value 'Hello World'. We then use object-path.has to check if obj has the path a.b.c. Since this path exists in obj, result is true. We then check if obj has the path a.b.d, which does not exist, so result2 is false.

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