There are a variety of ways, but the following methods seem to be the best.
if($.type(val) === "undefined"){
//Some code goes here
}
- API link of $ .type.
https://api.jquery.com/jQuery.type/
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From @south-man
There are a variety of ways, but the following methods seem to be the best.
if($.type(val) === "undefined"){
//Some code goes here
}