How to find if element with specific id exists or not

Question

In my JavaScript I want to check whether the element with specific id is exist or not, I tried it with 2 ways

1).

var myEle = document.getElementByI         


        

Answer 1

You need to specify which object you're calling getElementById from. In this case you can use document. You also can't just call .value on any element directly. For example if the element is textbox .value will return the value, but if it's a div it will not have a value.

You also have a wrong condition, you're checking

if (myEle == null)

which you should change to

if (myEle != null)

var myEle = document.getElementById("myElement");
if(myEle != null) { 
    var myEleValue= myEle.value; 
}