JS Function to remove dashes. You can use it for other characters as well by changing the js regular expression.

remove-dash-example.js

<script type="text/javascript">
$(document).ready(function(){

	$.cleanString = function(testString) {
		var numericString = testString.replace(/-/gi," ");
		// .replace() uses regular expression. In this case, its replaceing '-' with ' '.
		return numericString;
	}
	var question = "Sample-text-with-some-dashes";
	var cleaned = $.cleanString(question);

	alert(cleaned);
});
</script>