Js Map If Not Null
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Js Map If Not Null
I call the function like so within the head of my page: Get () gets the value for a key in a map. There are two ways to check if a variable is null or not.
If the value that is associated to the provided key is an object, then you will get a reference to that object and any change made to that object will effectively modify it inside the map object. String.split () leaving a single, empty string at the end, which i don't care about). Sets the value for a key in a map.
If you never return a value from a function in javascript, you implicitly return undefined.
// by doing this, //you can ensure what's returned is not undefined share improve this answer There are 3 ways to check for not null. // by doing this, //you can ensure what's returned is not undefined share improve this answer My recommendation is to use the strict not version.
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