Sometimes, we want to get the body element of site using only JavaScript.
In this article, we’ll look at how to get the body element of site using only JavaScript.
To get the body element of site using only JavaScript, we use the document.body property.
For instance, we write
document.body
to get the body element of the page.
To get the body element of site using only JavaScript, we use the document.body property.
Sometimes, we want to get latitude and longitude from Autocomplete without showing the map with Google Maps API and JavaScript.
In this article, we’ll look at how to get latitude and longitude from Autocomplete without showing the map with Google Maps API and JavaScript.
To get latitude and longitude from Autocomplete without showing the map with Google Maps API and JavaScript, we can use the getPlace method.
For instance, we write
const initialize = () => {
const input = document.getElementById("searchTextField");
const autocomplete = new google.maps.places.Autocomplete(input);
google.maps.event.addListener(autocomplete, "place_changed", function () {
const place = autocomplete.getPlace();
document.getElementById("city2").value = place.name;
document.getElementById("cityLat").value = place.geometry.location.lat();
document.getElementById("cityLng").value = place.geometry.location.lng();
});
};
google.maps.event.addDomListener(window, "load", initialize);
to define the initialize function.
In it, we create an autocomplete input with
const autocomplete = new google.maps.places.Autocomplete(input);
Then we get the autocomplete value when we type on it by listening toi the place_changed event with addListener.
Next, we get the place with getPlace.
And then we get the name of the place and its latitude and longitude with lat and lng.
To get latitude and longitude from Autocomplete without showing the map with Google Maps API and JavaScript, we can use the getPlace method.
Sometimes, we want to compare two arrays of objects, and exclude the elements who match values into new array in JavaScript.
In this article, we’ll look at how to compare two arrays of objects, and exclude the elements who match values into new array in JavaScript.
To compare two arrays of objects, and exclude the elements who match values into new array in JavaScript, we use the array filter and some methods.
For instance, we write
const result = result1.filter((o1) => !result2.some((o2) => o1.id === o2.id));
to call filter with a callback that calls result2.some to check if anything in result1 matches the id in any object in result2.
If that’s false, then we put the object o1 in the returned array.
To compare two arrays of objects, and exclude the elements who match values into new array in JavaScript, we use the array filter and some methods.
Sometimes, we want to use regex to get all the characters after a specific character with JavaScript.
In this article, we’ll look at how to use regex to get all the characters after a specific character with JavaScript.
To use regex to get all the characters after a specific character with JavaScript, we use the string substr and indexOf methods.
For instance, we write
const str = "'SELECT___100E___7',24";
const afterComma = str.substr(str.indexOf(",") + 1);
to call indexOf to get the index of the first comma.
Then we call substr with str.indexOf(",") + 1 to return the substring in str after the first comma.
To use regex to get all the characters after a specific character with JavaScript, we use the string substr and indexOf methods.
Sometimes, we want to define a variable if it doesn’t exist with JavaScript.
In this article, we’ll look at how to define a variable if it doesn’t exist with JavaScript.
To define a variable if it doesn’t exist with JavaScript, we use the nullish coalescing operator.
For instance, we write
someVar = someVar ?? "Default Value";
to assign "Default Value" to someVar if someVar doesn’t exist.
The nullish coalescing operator is ??.
To define a variable if it doesn’t exist with JavaScript, we use the nullish coalescing operator.