<form ... onsubmit="return check_form(this.form)"> <input type="text" name="mb_5" value="<?php echo get_text($member['mb_5']) ?>" id="reg_mb_5" class="form-control" maxlength="20"> .... </form> <script> function check_form(f) { if(f.mb_5.value.length != 6) { alert("생년월일 6자리 입력."); return false; } } </script>
<form ... onsubmit="return check_form(this.form)">
<input type="text" name="mb_5" value="<?php echo get_text($member['mb_5']) ?>" id="reg_mb_5" class="form-control" maxlength="20">
....
</form>
<script>
function check_form(f) {
if(f.mb_5.value.length != 6) {
alert("생년월일 6자리 입력.");
return false;
}
</script>
eyekiss 님 (201124) https://sir.kr/qa/386513