This is a JavaScript Function to check if an element exists, I use it regularly in an If.
The function:
function element_exists (elem) {
return((elem)?1:0);
}
The test:
//Test1
if(element_exists(document.getElementById("masthead"))){
console.log("element exists");
}else{
console.log("element not exists");
}
//Test2
if(element_exists(document.getElementById("masthead1"))){
console.log("element exists");
}else{
console.log("element not exists");
}
Our result:
element exists element not exists
We could see it works as it should.
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