Not between numbers in JavaScript

How to find any number not in between the two numbers in JavaScript?

By using [^0-9] expression we can find any digit not between the brackets.

<p>Click the below button to find any digit not between the brackets.</p>
<input type="button" value="Click" onclick="mySearch()" />
<p id="myId"></p>

<script>
    function mySearch() {
        var a = "54789614597822347";
        var b = /[^3-7]/g;
        var r = a.match(b);
        document.getElementById("myId").innerHTML = r;
    }
</script>

In the above code snippet we have given Id as "myId"to the second <p> element in the HTML code. There is a function mySearch() in the<script>block which is connected to the Onclick of the HTML button and there is a string with value "54789614597822347" to the variable a, from the string we need to find the digits not between the brackets [^3-7] for that we are using [^0-9] expression in the variable b. var b = /[^3-7]/g, in this code g do the global search for the digits not between the brackets [^3-7]. Variable R returns the digits not between brackets from a string. Onclick of the button "Click" in the HTML code fires the function mySearch() in the <script> block, at the same time [^0-9]expression finds the digits not between the brackets {[^3-7]} from a string with the help of global search and returns the output.