javascript - Can I close a validation dialog box with enter key but not submit textbox value but use enter for valid value? -

i have simple form qty textbox. implemented validation minimum qty. if user enters number below min qty dialog box stating under minimum , set value min via onchange event in textbox.

if use mouse works. issue when hit enter key close box submits form. thinking because cursor in textbox before validation.

i used check in form onkeypress event check enter button can close box , not submit form, thinking may want functionality valid quantities or higher, less force use submit button. possible take focus off of text box when dialog box fires user can press enter , not submit form value use enter key?

function textquantdown() {     //set min qauntity variable var min_quant = document.getelementbyid("min_quant"); //set text box value varaible var elprod_quant = document.getelementbyid("prod_quant"); var intprod_quant = (isnan(elprod_quant.value) || elprod_quant.value.length < 1) ? 2 : elprod_quant.value;   if( parseint(intprod_quant) < parseint(min_quant.value)){     alert( "minimum quantity not reached");     elprod_quant.value = min_quant.value; }else{   elprod_quant.value = intprod_quant;} return false; 

}

<input style="border:1px solid; font-size:14px; text-align:left;width:30px;" onchange="return textquantdown();" name="add_id[1]"  id="prod_quant" size="3" type="text" value="#thisclickquant#"  class="popinp" maxlength="3" /> 

without being able see rest of code, have event listener on submit, e.preventdefault() , sub in whatever want input values before manually submitting form via js.