ts if string is in type code example

Example 1: js check if variable is string

if (typeof myVar === 'integer'){
    //I am indeed an integer
}

if (typeof myVar === 'boolean'){
    //I am indeed a boolean
}

Example 2: display true if the parameter is type string

if (typeof myVar === 'string' || myVar instanceof String)
// it's a string
else
// it's something else