前端：form表单onsubmit

 

<form class="form" method="post" id="form" onsubmit="return checkForm(this)" action="">  
电话号码：<input id="tel" type="text" maxlength="11" name="tel"/>  
<button type="submit" name="submit" value="提交"/>  
</form>  

function checkForm(o){   
   var re=/^(13[0-9]{9})|(15[89][0-9]{8})$/;  
   if(!re.test(o.tel.value)){  
        alert('请输入正确的手机号码。');   
        return false;   
    }  
}  

　　

<form name="testform" action="jsref_onsubmit.asp"
onsubmit="alert('Hello ' + testform.fname.value +'!')">

What is your name?<br />
<input type="text" name="fname" />
<input type="submit" value="Submit" />

</form>