#getitem(key) Gets the value of a parameter and returns the value associated with the key. The given key exists in the list associated with this object.
if(localStorage.getItem("user")===null) {
//...
}But if the key does not exist in the list then it passes null value using the code given below
You can also follow the procedure given below -
if("user" in localStorage){
alert('yes');
} else {
alert('no');
}The above is the detailed content of Check if a key exists in HTML5 local storage. For more information, please follow other related articles on the PHP Chinese website!
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