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What is wrong with this line?
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Information générale
Forum:
Javascript
Catégorie:
Autre
Divers
Thread ID:
01628592
Message ID:
01628594
Vues:
36
>>What could be wrong with the following javascript line?
>>
>>
>>var MyVar = document.getElementById("MyInputText").value;
>>
>>
>>I have nothing in the javascript but the above line and Alert() after this line.
>>If I comment the above line, the Alert() fires. Otherwise, Alert() never fires. So I think there is something wrong with the above line.
>>But what?
>
>Well, you need to first test if document.getElementById returns an object. So, I would use two lines and check for object first. You also need to be sure that the id you're passing matches the id of the element.
>
>https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementById

How do you check/test if document.getElementById returns an object?
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