negative value if else

I want to write a simple JavaScript condition for negative value,

I am converting values which is more than 1000

if (val < 1000) {
             convert ...
           }

Now how can I write the same thing for the negative values !

So for example how can I write if the values are less than -1 to -1000 than do something !

You can say that I can just simply write if the values are less than 0, but I just want to convert values which are -1 to -1000.

if ((val < 1000) || ((val >= -1 ) && (val < -1000))) {
             convert ...
           }

How I can write this function in JavaScript , anyone knows the solution!