1.电话号码前端验证
正则表达式
<input type="text" class="loginuser" placeholder="电话"
id="phone" οnblur="checkPhone()" />
<span id="phone_text" style="margin-left: 100px"></span>
<script>
function checkPhone(){
var phone = document.getElementById('phone').value;
if(!(/^1[34578]\d{9}$/.test(phone))){
return document.getElementById('phone_text').innerHTML = '请输入正确的手机号';
return false;
}
else{return document.getElementById('phone_text').innerHTML = 'ok';}
}
</script>