我有JS表单验证的麻烦。我使用正则表达式。如果所有字段的用户填写正确,则表单中的提交按钮处于活动状态(onmouseover),但当其中一个字段不正确时,提交按钮将被禁用。当用户填写所有字段正确 - 提交按钮站仍然禁用,你能帮我解决这个问题吗?因此,用户必须启用所有字段并提交按钮。如果从HTML手动,该事件将被触发删除禁用属性http://jsfiddle.net/djwasp4o/:JS表单验证,如果所有字段都正确,激活提交按钮
<!-- validation -->
<script language=JavaScript>
function checkForm() {
var err = 0;
if (document.getElementById("fio").value == '') {
document.getElementById("fio").style.border = "1px solid #FF0000";
document.getElementById("fio_err").innerHTML = "Enter data";
err = 1;
}
if (document.getElementById("_phone_top").value.length < 5) {
document.getElementById("_phone_top").style.border = "1px solid #FF0000";
document.getElementById("tel_err").innerHTML = "length < 5";
err = 1;
}
var email = document.getElementById('email').value;
emailTest = "^[_.0-9a-z-][email protected]([0-9a-z][0-9a-z_-]+.)+[a-z]{2,4}$";
var regex = new RegExp(emailTest);
if (!regex.test(email)) {
document.getElementById("email").style.border = "1px solid #FF0000";
document.getElementById("email_err").innerHTML = "invalid e-mail";
err = 1;
}
if (err == 1) {
document.getElementById('ok').setAttribute("disabled","disabled");
} else {
document.getElementById('ok').removeAttribute("disabled");
}
}
function setBorder(id) {
document.getElementById(id).style.border = "1px solid #C0C0C0";
document.getElementById(id+"_err").innerHTML = "";
}
</script>
<!-- Form -->
<form method="post" id="form_top" name="form_top" action="/mail.php">
<input type="text" class="textbox" name="fio" id="fio" placeholder="NAME"><div id="fio_err"></div><br><br>
<input type="text" class="textbox" name="tel" id="_phone_top" placeholder="PHONE"><div id="tel_err"></div><br><br>
<input type="text" class="textbox" name="email" id="email" placeholder="E-Mail"><div id="email_err"></div><br><br>
<input type="text" class="textbox" name="company" placeholder="COMP"><br><br>
<input type="text" name="formfrom" value="верхняя форма" hidden>
<input type="submit" class="textbox" name="ok" id="ok" value="Submit!" onmouseover="checkForm()"><br>
</form>
为什么downvote? – sodawillow