let a = {
a: 1,
b: true
}
let b = {
y: 093,
z: 'This is an object'
}
const c = {...a, ...b}
Here is what the above code is Doing:
1. We’re creating an object called a.
2. We’re creating an object called b.
3. We’re creating a new object called c.
4. We’re using the spread operator to copy the properties of a and b into c.
var oTemp = JSON.parse(buf.toString()); Here is what the above code is Doing: 1. We’re creating a new Buffer object, passing in the JSON string. 2. We’re converting the Buffer object to a string, and then parsing the string into a JavaScript object.
const data = { a : ‘b’, c : ‘d’ }; const length = Object.keys(data).length; //Length is 2 Here is what the above code is Doing: 1. We create an object called data. 2. We create a variable called length and assign it the value of the length of the object data. 3. We print…
setMovies(result); console.log(movies) // movies here will not be updated // you sould handle it inside here useEffect(() => { // action on update of movies }, [movies]); Here is what the above code is Doing: 1. We are calling the API and getting the data. 2. We are setting the data to the movies variable….
function getErrorObject(){ try { throw Error(”) } catch(err) { return err; } } var err = getErrorObject(); var caller_line = err.stack.split(“\n”)[4]; var index = caller_line.indexOf(“at “); var clean = caller_line.slice(index+2, caller_line.length); Here is what the above code is Doing: 1. We create a function that throws an error. 2. We catch the error and return…
Hide Show Here is what the above code is Doing: 1. We have a div element with two event bindings: mouseover and mouseout. 2. The mouseover event binding calls the changeText() method, which sets the changeText property to true. 3. The mouseout event binding calls the changeText() method, which sets the changeText property to false….
const subSchema = mongoose.Schema({ //your subschema content },{ _id : false }); Here is what the above code is Doing: 1. We are creating a subschema. 2. We are setting the _id property to false. 3. We are creating a schema with the subschema as a property. 4. We are creating a model with the…