可以在check方法中,将对象本身传给函数.这样就可以获得点击按钮本身的属性等值.然后根据你的按钮属性这些值,进行分支判断.如下:<html> <head> <script> function check(obj) { alert("点击按钮名称=["+obj.name+"],按钮value=["+obj.value+"]");} </script> </head> <bod
最近遇到一次处理form数据的过滤,采用了button的onclick事件来检查,发现return false后表单仍然提交了。 于是仔细研究了下onclick、onsubmit、submit集合函数之间的关系和区别 onsubmit: You can override this event by returning false in the event handler. Use this capability to validate data on the client side ...
方法如下:<html><script>function checkform(){var txt=document.getElementById("txt");if(txt.value==""){alert("输入不能为空!");return false;}else{return true;}</script><body><form><input type="text" id="txt" /><input type="submit" onclick="return checkform()" value=...
第二种:onclick 1<scriptlanguage="javascript">2functionSendForm ()3{4if(CheckPost())5{6document.addForm.submit();7}8}910functionCheckPost ()11{12if(addForm.user.value=="")13{14alert("请填写用户名!");15addForm.username.focus();16returnfalse;17}18if(addForm.title.value.length<5)19{20...
针对你提出的“submitform is not defined at htmlbuttonelement.onclick”问题,我将根据提供的提示逐一分析并给出建议: 确认submitform函数的定义: 确保在你的JavaScript代码中已经定义了submitform函数。如果函数未定义,当HTML按钮触发onclick事件时,浏览器会抛出“not defined”的错误。 示例代码定义submitform函数:...
HTML HTML FormHyper links are used to link different pages within a site and outside a site to each other. Same thing can be achieved by using a button. We can use a button to link different pages. We will connect the url of the new page to the onclick event of the button. We ...
问如何在javascript中从本地存储onClick中获取数据EN2.onclick(this)代码详解 一般标签中会使用href和...
朋友,想你那样虽然onclick="check()"会生效,但是你点击后不仅仅执行check(),还会提交表单,这样就造成check()无法执行,因为一旦提交表单就会刷新页面。建议你写在form里 即:<form onsubmit="return check();"/>然后在check()函数里如果验证成功则 return true;否则return false;参考资料:<a href...
</form> Obviously, this isn’t the optimal way to do things. But it is the only way to actually use an OnClick function in CSS. The importance of an OnClick function An OnClick function allows you to interact with the user. For example, you can show an alert box or load a new ...
后者所定义的子程序只要名为inp1的控件单击就会自动触发。注意:在同一个页面中只允许有一个控件名为:inp1也就是不允许有重名出现。不是所有的控件都有OnSubmit事件,OnSubmit事件是用于提交网页内容的。例如:<Form name="f1" Action="?" Method=post OnSubmit="s1" OnClick="s2"> <input type=...