$(document).ready(
function(){
var theValue = $('#myId').val();
$('option[value=' + theValue + ']')
.attr('selected',true);
});
Here is what the above code is Doing:
1. When the page loads, it gets the value of the select box.
2. It then finds the option with that value and sets the selected attribute to true.
formdata.append(‘tags’, JSON.stringify(tags)); Here is what the above code is Doing: 1. We are creating a new FormData object. 2. We are appending the file to the formdata object. 3. We are appending the title, description and tags to the formdata object. 4. We are sending the formdata object to the server using the POST method.
// date1 and date2 are date objects let hours = Math.abs(date1 – date2) / 36e5; // The subtraction returns the difference between the two dates in milliseconds. // 36e5 is the scientific notation for 60*60*1000, dividing by which converts // the milliseconds difference into hours. Here is what the above code is Doing: 1. The…
npm i react-native-eject npm i @react-native-community/cli react-native eject Here is what the above code is Doing: 1. Installing react-native-eject 2. Installing @react-native-community/cli 3. Ejecting the project Now, you can run the following command to run the project: react-native run-android
Here is what the above code is Doing: 1. It’s looking for a text node that starts with a space and has a preceding sibling that is a sub element. 2. If it finds one, it creates a new s element and replaces the space with nothing. 3. If it doesn’t find one, it copies…
class A { static price = ‘8.99 PLN’; } class B extends A { static price = ‘6.99 PLN’; } console.log(A.price); //➞ ‘8.99 PLN’ console.log(B.price); //➞ ‘6.99 PLN’ Here is what the above code is Doing: 1. We create a class A with a static property price. 2. We create a class B that extends…
$( “body” ).off( “click”); $( “body” ).unbind( “click”); Here is what the above code is Doing: 1. It’s creating a function called “clickHandler” that will be called when the user clicks on the body of the page. 2. It’s attaching the clickHandler function to the body of the page. 3. It’s removing the clickHandler function…