Remove A Word From Sentence

[Master]

I want to check a text input in a text field and if the value selected from another dropdown exist in there remove it. There has to be no extra spaces before or after text.

[MayMusic]

You can use a code as below in the Footer of the page. When you hover over submit button function will fire

<script>
var address = document.getElementById('ID OF TEXT FIELD').value;
var abb= document.getElementById('ID OF DROPDOWN').value;

document.getElementById('Submit').onmouseover = function (){
if (address.search(document.getElementById('ID OF DROPDOWN').value) != 0){
document.getElementById('ID OF TEXT FIELD').value= document.getElementById('ID OF TEXT FIELD').value.replace(document.getElementById('ID OF DROPDOWN').value, "").trim();
}

}
</script>

Replace IDs with appropriate IDs