在表单提交前进行验证的几种方式整理
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了在表单提交前进行验证的几种方式整理,小编现在分享给大家,供广大互联网技能从业者学习和参考。文章包含8480字,纯文字阅读大概需要13分钟。
内容图文
![在表单提交前进行验证的几种方式整理](/upload/InfoBanner/zyjiaocheng/367/40f62ea170d8445f9304b40d123686ae.jpg)
在Django中,为了减轻后台压力,可以利用JavaScript在表单提交前对表单数据进行验证。下面提供了有效的几种方式(每个.html文件为一种方式)。
formpage1.html
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Example1</title>
<script type="text/javascript" src="/Resource/jquery-1.4.1.js"></script>
<script type="text/javascript">
function jump()
{
//清空表单所有数据
document.getElementById("firstname").value=""
document.getElementById("lastname").value=""
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
}
$(document).ready(function(){
$("#form1").bind("submit", function(){
var txt_firstname = $.trim($("#firstname").attr("value"))
var txt_lastname = $.trim($("#lastname").attr("value"))
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
var isSuccess = 1;
if(txt_firstname.length == 0)
{
$("#firstnameLabel").text("firstname不能为空!")
$("#firstnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(txt_lastname.length == 0)
{
$("#lastnameLabel").text("lastname不能为空!")
$("#lastnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(isSuccess == 0)
{
return false;
}
})
})
</script>
</head>
<body>
提交表单前进行验证(方法一)
<hr width="40%" align="left" />
<form id="form1" method="post" action="/DealWithForm1/">
<table>
<tr>
<td>first_name:</td>
<td><input name="firstname" type="text" id="firstname" /></td>
<td><label id="firstnameLabel"></label></td>
</tr>
<tr>
<td>last_name:</td>
<td><input name="lastname" type="text" id="lastname" /></td>
<td><label id="lastnameLabel"></label></td>
</tr>
</table>
<hr width="40%" align="left" />
<button type="submit">提交</button>
<button type="button" onclick="jump();">取消</button>
</form>
</body>
</html>
formpage2.html
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Example2</title>
<script type="text/javascript" src="/Resource/jquery-1.4.1.js"></script>
<script type="text/javascript">
function jump()
{
//清空表单所有数据
document.getElementById("firstname").value=""
document.getElementById("lastname").value=""
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
}
function check(){
var txt_firstname = $.trim($("#firstname").attr("value"))
var txt_lastname = $.trim($("#lastname").attr("value"))
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
var isSuccess = 1;
if(txt_firstname.length == 0)
{
$("#firstnameLabel").text("firstname不能为空!")
$("#firstnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(txt_lastname.length == 0)
{
$("#lastnameLabel").text("lastname不能为空!")
$("#lastnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(isSuccess == 0)
{
return false;
}
return true;
}
</script>
</head>
<body>
提交表单前进行验证(方法二)
<hr width="40%" align="left" />
<form id="form1" method="post" action="/DealWithForm1/" onsubmit="return check()">
<table>
<tr>
<td>first_name:</td>
<td><input name="firstname" type="text" id="firstname" /></td>
<td><label id="firstnameLabel"></label></td>
</tr>
<tr>
<td>last_name:</td>
<td><input name="lastname" type="text" id="lastname" /></td>
<td><label id="lastnameLabel"></label></td>
</tr>
</table>
<hr width="40%" align="left" />
<button type="submit">提交</button>
<button type="button" onclick="jump();">取消</button>
</form>
</body>
</html>
formpage3.html
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Example3</title>
<script type="text/javascript" src="/Resource/jquery-1.4.1.js"></script>
<script type="text/javascript">
function jump()
{
//清空表单所有数据
document.getElementById("firstname").value=""
document.getElementById("lastname").value=""
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
}
function checktosubmit(){
var txt_firstname = $.trim($("#firstname").attr("value"))
var txt_lastname = $.trim($("#lastname").attr("value"))
$("#firstnameLabel").text("")
$("#lastnameLabel").text("")
var isSuccess = 1;
if(txt_firstname.length == 0)
{
$("#firstnameLabel").text("firstname不能为空!")
$("#firstnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(txt_lastname.length == 0)
{
$("#lastnameLabel").text("lastname不能为空!")
$("#lastnameLabel").css({"color":"red"});
isSuccess = 0;
}
if(isSuccess == 1)
{
form1.submit();
}
}
</script>
</head>
<body>
提交表单前进行验证(方法三)
<hr width="40%" align="left" />
<form id="form1" method="post" action="/DealWithForm1/">
<table>
<tr>
<td>first_name:</td>
<td><input name="firstname" type="text" id="firstname" /></td>
<td><label id="firstnameLabel"></label></td>
</tr>
<tr>
<td>last_name:</td>
<td><input name="lastname" type="text" id="lastname" /></td>
<td><label id="lastnameLabel"></label></td>
</tr>
</table>
<hr width="40%" align="left" />
<button type="button" onclick="checktosubmit()">提交</button>
<button type="button" onclick="jump();">取消</button>
</form>
</body>
</html>
以下是视图函数、URL配置以及相关设置
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
views.py
代码如下:
#coding: utf-8
from django.http import HttpResponse
from django.shortcuts import render_to_response
def DealWithForm1(request):
if request.method=="POST":
FirstName=request.POST.get('firstname','')
LastName=request.POST.get('lastname','')
if FirstName and LastName:
response=HttpResponse()
response.write("<html><body>"+FirstName+" "+LastName+u"! 你提交了表单!</body></html>")
return response
else:
response=HttpResponse()
response.write('<html><script type="text/javascript">alert("firstname或lastname不能为空!");\
window.location="/DealWithForm1"</script></html>')
return response
else:
return render_to_response('formpage1.html')
def DealWithForm2(request):
if request.method=="POST":
FirstName=request.POST.get('firstname','').encode("utf-8")
LastName=request.POST.get('lastname','').encode("utf-8")
if FirstName and LastName:
html="<html><body>"+FirstName+" "+LastName+"! 你提交了表单!"+"</body></html>"
return HttpResponse(html)
else:
response=HttpResponse()
response.write('<html><script type="text/javascript">alert("firstname或lastname不能为空!");\
window.location="/DealWithForm2"</script></html>')
return response
else:
return render_to_response('formpage2.html')
def DealWithForm3(request):
if request.method=="POST":
FirstName=request.POST.get('firstname','')
LastName=request.POST.get('lastname','')
if FirstName and LastName:
response=HttpResponse()
response.write('<html><body>'+FirstName+LastName+u'! 你提交了表单!</body></html>')
return response
else:
response=HttpResponse()
response.write('<html><script type="text/javascript">alert("firstname或lastname不能为空!");\
window.location="/DealWithForm3"</script></html>')
return response
else:
return render_to_response('formpage3.html')
urls.py
代码如下:
from django.conf.urls.defaults import patterns, include, url
import views
from django.conf import settings
urlpatterns = patterns('',
url(r'^Resource/(?P<path>.*)$','django.views.static.serve',{'document_root':settings.STATIC_RESOURCE}),
url(r'^DealWithForm1','views.DealWithForm1'),
url(r'^DealWithForm2','views.DealWithForm2'),
url(r'^DealWithForm3','views.DealWithForm3'),
)
settings.py
代码如下:
# Django settings for CheckFormBeforeSubmit project.
import os
HERE = os.path.abspath(os.path.dirname(__file__))
DEBUG = True
TEMPLATE_DEBUG = DEBUG
...
STATIC_RESOURCE=os.path.join(HERE, "resource")
...
MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.csrf.CsrfResponseMiddleware',
)
ROOT_URLCONF = 'CheckFormBeforeSubmit.urls'
TEMPLATE_DIRS = (
os.path.join(HERE,'template'),
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
...
内容总结
以上是互联网集市为您收集整理的在表单提交前进行验证的几种方式整理全部内容,希望文章能够帮你解决在表单提交前进行验证的几种方式整理所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错,欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 gblab@vip.qq.com 举报,一经查实,本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。