我希望我的字段只接受整数，我已经保持该字段所需的验证？ [英] I want my field to accept only integers and i have kept that field in required validation?
问题描述
我有完整的项目，但它缺乏这一个要求，我不能在我的项目自己解决这个问题。
I have got my complete project done but it is lacking this one requirement and i'm not able to solve this issue in my project myself.
推荐答案
您可以使用CodeIgniter的表单验证吗？并设定如下的规则：
Could you use CodeIgniter's form validation? And set a rule like this:
$this->form_validation->set_rules('yourfield', 'Your field\'s human name', 'required|integer');
这假设字段名为 yourfield 。
阅读评论后，似乎想使用jQuery检查字段中的值是否为整数。建议您查看此插件： jQuery - 数字
After reading the comments, it seems like you want to check if value in the field is an integer using jQuery. I'd suggest looking into this plugin: jQuery - numeric
有一个很好的例子可以使用它此处。
There's a good example of to use it here.
以下是相关代码：
像这样：
<input class="integer" type="text" />
然后您可以验证它，检查它是一个整数，如下：
Then you can validate it, checking that it is an integer, like this:
$(".integer").numeric(false, function() { alert("Integers only"); this.value = ""; this.focus(); });
但是，由于JavaScript / jQuery是在客户端（并且可以绕过），我要强调的是，在服务器端验证，这种情况下使用PHP非常重要。 这个出色的答案更详细地解释了为什么两者都很重要。
However, as JavaScript/jQuery is run on the client-side (and can be bypassed), I would stress that it is very important to also validate on the server-side, in this case using PHP. This excellent answer explains in more detail why both are important.
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