The toLocaleLowerCase() method of String values returns this string converted to lower case, according to any locale-specific case mappings.

The WeakRef() constructor creates WeakRef objects.

The setInt32() method of DataView instances takes a number and stores it as a 32-bit signed integer in the 4 bytes starting at the specified byte offset of this DataView. There is no alignment constraint; multi-byte values may be stored at any offset within bounds.

The setFloat32() method of DataView instances takes a number and stores it as a 32-bit floating point number in the 4 bytes starting at the specified byte offset of this DataView. There is no alignment constraint; multi-byte values may be stored at any offset within bounds.

The setInt16() method of DataView instances takes a number and stores it as a 16-bit signed integer in the 2 bytes starting at the specified byte offset of this DataView. There is no alignment constraint; multi-byte values may be stored at any offset within bounds.

The includes() method of Array instances determines whether an array includes a certain value among its entries, returning true or false as appropriate.

The getFloat32() method of DataView instances reads 4 bytes starting at the specified byte offset of this DataView and interprets them as a 32-bit floating point number. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.

The getUint32() method of DataView instances reads 4 bytes starting at the specified byte offset of this DataView and interprets them as a 32-bit unsigned integer. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.

The get() method of Map instances returns a specified element from this map. 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.

The Map() constructor creates Map objects.