需要一些解决办法。 jquery 中的点击事件中未调用 Javascript 函数
我试图从我的 javascript 代码调用名为 isUrgencyTypeValid 的函数,但它不起作用。请检查我的代码有什么问题。 应显示未显示的警报
我的 javascript 函数未被调用。
HTML代码
<td colspan="2" align="center"><input id="btnSubmit" type="submit" value="submit" runat="server"/></td></tr>
jQuery调用函数
$("#btnSubmit").bind("click",function(){
alert(); // this is running
isUrgencyTypeValid();
});
javascript实现的函数
function isUrgencyTypeValid()
{
alert("asd");
var i=0;
for(i=0;i<$("radio[name='urgencyType']").length;i++)
{
if($("radio[name='urgencyType']")[i].checked)
{
alert($("radio[name='urgencyType']")[i].value);
return true;
}
return false;
}
关于我的表单的更多描述在这里
<form runat="server" name="myPage">
<table style="width: 100%;" cellpadding="5" cellspacing="5">
<caption>
Computer Support / Service Request
</caption>
<tr><td>First Name</td>
<td><input id="txtFirstName" type="text" value="First Name" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Last Name</td>
<td><input id="txtLastName" type="text" value="Last Name" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Email Address</td>
<td><input id="txtEmailAddress" type="text" value="Email Address" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Phone No</td>
<td><input id="txtPhoneNo" type="text" value="Phone No" runat="server" /><span class="error"></span></td></tr>
<tr>
<td>Do you have text messaging</td>
<td>
<span>Yes</span><input id="rdoYes" value="Yes" type="radio" runat="server"/>
<span>No</span><input id="rdoNo" value="No" type="radio" runat="server"/><span class="error"></span>
</td></tr>
<tr>
<td>Description of request*: </td>
<td><textarea id="txtDescription" cols="50" rows="10" runat="server"></textarea><span class="error"></span><span id="lengthCount"></span></td></tr>
<tr>
<td>Urgency of this support request:</td>
<td>
<input id="rdoAnyTime" name="urgencyType" value="Anytime" type="radio" runat="server"/><span>Anytime</span><br />
<input id="rdoCplDays" name="urgencyType" value="In the next couple of days" type="radio" runat="server"/><span>In the next couple of days</span><br />
<input id="rdoToday" name="urgencyType" value="Today" type="radio" runat="server"/><span>Today</span><br />
<input id="rdoUrgent" name="urgencyType" value="This is extremely urgent...I cannot wait!" type="radio" runat="server"/><span>This is extremely urgent...I cannot wait!</span><br />
<input id="rdoTalkSometime" name="urgencyType" value="Please contact me and we'll talk about it" type="radio" runat="server"/><span>Please contact me and we'll talk about it</span><br /><span class="error"></span>
</td></tr>
<tr>
<td colspan="2" align="center">Captcha To Be implemented.</td></tr>
<tr>
<td></td>
<td><input id="chkRequestCopy" type="checkbox" runat="server"/>Please send me a copy of this service request</td></tr>
<tr>
<td colspan="2" align="center"><input id="btnSubmit" type="submit" value="submit" runat="server"/></td></tr>
</table>
</form>
I am trying to call my function named isUrgencyTypeValid from my javascript code but it is not working. Please check what is the problem in my code.
Alert should get displayed which is not being displayed
My javascript function is not being called.
HTML Code
<td colspan="2" align="center"><input id="btnSubmit" type="submit" value="submit" runat="server"/></td></tr>
jQuery Call function
$("#btnSubmit").bind("click",function(){
alert(); // this is running
isUrgencyTypeValid();
});
javascript implemented function
function isUrgencyTypeValid()
{
alert("asd");
var i=0;
for(i=0;i<$("radio[name='urgencyType']").length;i++)
{
if($("radio[name='urgencyType']")[i].checked)
{
alert($("radio[name='urgencyType']")[i].value);
return true;
}
return false;
}
More description about my form is here
<form runat="server" name="myPage">
<table style="width: 100%;" cellpadding="5" cellspacing="5">
<caption>
Computer Support / Service Request
</caption>
<tr><td>First Name</td>
<td><input id="txtFirstName" type="text" value="First Name" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Last Name</td>
<td><input id="txtLastName" type="text" value="Last Name" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Email Address</td>
<td><input id="txtEmailAddress" type="text" value="Email Address" runat="server"/><span class="error"></span></td></tr>
<tr>
<td>Phone No</td>
<td><input id="txtPhoneNo" type="text" value="Phone No" runat="server" /><span class="error"></span></td></tr>
<tr>
<td>Do you have text messaging</td>
<td>
<span>Yes</span><input id="rdoYes" value="Yes" type="radio" runat="server"/>
<span>No</span><input id="rdoNo" value="No" type="radio" runat="server"/><span class="error"></span>
</td></tr>
<tr>
<td>Description of request*: </td>
<td><textarea id="txtDescription" cols="50" rows="10" runat="server"></textarea><span class="error"></span><span id="lengthCount"></span></td></tr>
<tr>
<td>Urgency of this support request:</td>
<td>
<input id="rdoAnyTime" name="urgencyType" value="Anytime" type="radio" runat="server"/><span>Anytime</span><br />
<input id="rdoCplDays" name="urgencyType" value="In the next couple of days" type="radio" runat="server"/><span>In the next couple of days</span><br />
<input id="rdoToday" name="urgencyType" value="Today" type="radio" runat="server"/><span>Today</span><br />
<input id="rdoUrgent" name="urgencyType" value="This is extremely urgent...I cannot wait!" type="radio" runat="server"/><span>This is extremely urgent...I cannot wait!</span><br />
<input id="rdoTalkSometime" name="urgencyType" value="Please contact me and we'll talk about it" type="radio" runat="server"/><span>Please contact me and we'll talk about it</span><br /><span class="error"></span>
</td></tr>
<tr>
<td colspan="2" align="center">Captcha To Be implemented.</td></tr>
<tr>
<td></td>
<td><input id="chkRequestCopy" type="checkbox" runat="server"/>Please send me a copy of this service request</td></tr>
<tr>
<td colspan="2" align="center"><input id="btnSubmit" type="submit" value="submit" runat="server"/></td></tr>
</table>
</form>
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(2)
我复制了你的代码并遇到了同样的问题。然后我仔细观察,发现 isUrgencyTypeValid() 函数中缺少右括号。 for 循环的右括号丢失。 Firefox 错误控制台也会显示这一点。
添加括号后,警报就正常工作了。
I copied your code and ran into the same issue. Then I looked at it closer and noticed you are missing a closing bracket in your isUrgencyTypeValid() function. The closing bracket for your for loop is missing. Firefox Error Console will also show this.
Once I added the bracket the alert worked fine.
您的
radio
选择器不正确。不存在
radio
元素,但是有一个:radio
伪类选择器。您的代码应为:
** 编辑 **
除了上述更改之外,由于
alert
从未发生,这表明isUrgencyTypeValid
未被调用。最可能的解释是,在将处理程序绑定到按钮的
click
事件之前,您没有等到 DOM 加载。您应该在某个地方有一些如下所示的代码:Your
radio
selector is incorrect.There's not such thing as a
radio
element, but there is a:radio
pseudo-class selector.Your code should read:
** EDIT **
In addition to the changes above, since the
alert
never occurs, this indicates thatisUrgencyTypeValid
is not being called.The most likely explanation is that you're not waiting until the DOM is loaded, before you bind the your handler to the
click
event of the button. You should have some code somewhere that looks like this: