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');
}js check if dom element exists
var myElement = document.getElementById("myElementID");
if(!myElement){
//#myElementID element DOES NOT exist
}
if(myElement){
//#myElementID element DOES exists
}java check if element exists in array
package com.mkyong.core;
import java.util.Arrays;
import java.util.List;
public class StringArrayExample1 {
public static void main(String[] args) {
String[] alphabet = new String[]{"A", "B", "C"};
// Convert String Array to List
List<String> list = Arrays.asList(alphabet);
if(list.contains("A")){
System.out.println("Hello A");
}
}
}
Copycheck if the element exists in javascript
var myEle = document.getElementById("myElement");
if(myEle){
var myEleValue= myEle.value;
}check if the element exists in javascript
<div id="test">Example DIV element.</div>
<script>
//Attempt to get the element using document.getElementById
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!');
}
</script>Copyright © 2021 Codeinu
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