Validating empty textarea

Using regular expression to validate whether the text area is empty, and it should not allow the user to enter a space.

HTML

<textarea name="textarea1" id="textArea1" cols="30" rows="10"></textarea>
<button id="test">Check</button>

JavaScript

$("#test").click(function() {
   alert("test");
    var inputField = document.getElemenById("textArea1").value;
    if(inputField.match(\s)){
            alert("Entering only space is not allowed");
    }else if(inputField == ""){
        alert("please enter a value, textarea cannot be empty");
    }else alert("Success");
    
});