Checking if a div exists is fairly simple
if(document.getif(document.getElementById('if')){
}
But how can I check if a div with the given id does not exist?
This question is related to
javascript
html
if-statement
That works with :
var element = document.getElementById('myElem');
if (typeof (element) != undefined && typeof (element) != null && typeof (element) != 'undefined') {
console.log('element exists');
}
else{
console.log('element NOT exists');
}
if (!document.getElementById("given-id")) {
//It does not exist
}
The statement document.getElementById("given-id")
returns null
if an element with given-id
doesn't exist, and null
is falsy meaning that it translates to false when evaluated in an if-statement. (other falsy values)
There's an even better solution. You don't even need to check if the element returns null
. You can simply do this:
if (document.getElementById('elementId')) {
console.log('exists')
}
That code will only log exists
to console if the element actually exists in the DOM.
Try getting the element with the ID and check if the return value is null:
document.getElementById('some_nonexistent_id') === null
If you're using jQuery, you can do:
$('#some_nonexistent_id').length === 0
getElementById
returns null
if there is no such element.
Check both my JavaScript and JQuery code :
JavaScript:
if (!document.getElementById('MyElementId')){
alert('Does not exist!');
}
JQuery:
if (!$("#MyElementId").length){
alert('Does not exist!');
}
All these answers do NOT take into account that you asked specifically about a DIV element.
document.querySelector("div#the-div-id")
@see https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector
I do below and check if id
exist and execute function if exist.
var divIDVar = $('#divID').length;
if (divIDVar === 0){
console.log('No DIV Exist');
} else{
FNCsomefunction();
}
Source: Stackoverflow.com