check if an id exists javascript

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Suzie
10 Aug 2016
1 var myEle = document.getElementById("myElement");
2    if(myEle){
3        var myEleValue= myEle.value;
4    }
5
6//the return of getElementById is null if an element is not actually 
7//present inside the dom, so your if statement will fail, because null 
8//is considered a false value
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