JavaScript之小結

1.電話號碼前端驗證

正則表達式

<input type="text" class="loginuser" placeholder="電話" 
 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 = '請輸入正確的手機號';
     	return false;                   
  								        }   
    else{return document.getElementById('phone_text').innerHTML = 'ok';}
 						 }
</script>