js element exists
var element = document.getElementById("test");
//If it isn't "undefined" and it isn't "null", then it exists.
if(typeof(element) != 'undefined' && element != null){
alert('Element exists');
} else{
alert('Element does not exist');
}javascript check if variable exists
if (typeof myVar !== 'undefined') {
// myVar is defined
}check if the element exists in javascript
var myEle = document.getElementById("myElement");
if(myEle){
var myEleValue= myEle.value;
}javascript file exists check
// checking existence of file synchronously
function doesFileExist(urlToFile) {
var xhr = new XMLHttpRequest();
xhr.open('HEAD', urlToFile, false);
xhr.send();
return xhr.status !== 404;
}Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
