Function domInputValue

domInputValue(
    targetOrQuery: string | HTMLInputElement,
    options?: Partial<DomValueOptions>,
): { el: HTMLInputElement } & Reactive<string> & { last(): string } & {
    set(value: string): void;
}
A stream of values when the a HTMLInputElement changes. Eg a
```
const r = Rx.From.domInputValue(`#myEl`);
r.onValue(value => {
 // value will be string
});
```
Options:
- emitInitialValue: If true emits the HTML value of element (default: false)
- attributeName: If set, this is the HTML attribute value is set to when writing to stream (default: 'value')
- fieldName: If set, this is the DOM object field set when writing to stream (default: 'value')
- when: 'changed'|'changing' when values are emitted. (default: 'changed')
- fallbackValue: Fallback value to use if field/attribute cannot be read (default: '')
Parameters
- targetOrQuery: string | HTMLInputElement
- options: Partial<DomValueOptions> = {}
Returns { el: HTMLInputElement } & Reactive<string> & { last(): string } & {
set(value: string): void;
}
- el: HTMLInputElement
- last:function
  - last(): string
    Returns string
- set:function
  - set(value: string): void
    Sets a value
    
    Parameters
    value: string
    Value to write
    
    Returns void