jquery表单验证提交,使用jquery实现表单验证

怎么使用jquery提交表单

jquery提交表单有两种情况：

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1：jquery只做提交用。

$("form").submit();

这个的表单提交到什么地方的是更具form元素里面的action属性去定义的。

2：jquery用ajax提交数据。

$.ajax({

type:"post",

url:"xxx.php", // 这里是提交到什么地方的url

data:{}, // 这里把表单里面的数据放在这里传到后台

dataType:"json",

success:function(res){

// 调用回调函数

}

});

JQuery实现提交表单时候需要验证所有文本框是否为空吗？

这个可以在表单上添加onsubmit函数和使用jQuery的each函数来判断

varflag=true;

functioncheckForm(frm){

$("#frminput[type='text']").each(function(i,obj){

if(obj.value==""){

alert($(obj).attr("placeholder"));

flag=false;

returnfalse;

}

});

returnflag;

}

#47;script

文本1：

文本2：

文本3：

文本4：

文本5：

这个可以在表单上添加onsubmit函数和使用jQuery的each函数来判断

script type="text/javvascript"

var flag = true;

function checkForm(frm) {

$("#frm input[type='text']").each(function(i, obj) {

if(obj.value == "") {

alert($(obj).attr("placeholder"));

flag = false;

return false;

}

});

return flag;

}

/script

form ation="目标地址" method="post" onsubmit="return checkForm();" id="frm"

文本1：input type="text" name="txt1" value="" placeholder="文本1不能为空"/br/

文本2：input type="text" name="txt2" value="" placeholder="文本2不能为空"/br/

文本3：input type="text" name="txt3" value="" placeholder="文本3不能为空"/br/

文本4：input type="text" name="txt4" value="" placeholder="文本4不能为空"/br/

文本5：input type="text" name="txt5" value="" placeholder="文本5不能为空"/br/

input type="submit" value="提交表单"/

jquery在表单提交前有几种校验方法

在表单提交前进行验证的几种方式 .

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

复制代码 代码如下:

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""

html xmlns=""

head

meta http-equiv="Content-Type" content="text/html; charset=utf-8" /

titleExample1/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

tdfirst_name:/td

tdinput name="firstname" type="text" id="firstname" //td

tdlabel id="firstnameLabel"/label/td

/tr

tr

tdlast_name:/td

tdinput name="lastname" type="text" id="lastname" //td

tdlabel 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

复制代码 代码如下:

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""

html xmlns=""

head

meta http-equiv="Content-Type" content="text/html; charset=utf-8" /

titleExample2/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

tdfirst_name:/td

tdinput name="firstname" type="text" id="firstname" //td

tdlabel id="firstnameLabel"/label/td

/tr

tr

tdlast_name:/td

tdinput name="lastname" type="text" id="lastname" //td

tdlabel 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

复制代码 代码如下:

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""

html xmlns=""

head

meta http-equiv="Content-Type" content="text/html; charset=utf-8" /

titleExample3/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

tdfirst_name:/td

tdinput name="firstname" type="text" id="firstname" //td

tdlabel id="firstnameLabel"/label/td

/tr

tr

tdlast_name:/td

tdinput name="lastname" type="text" id="lastname" //td

tdlabel 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

复制代码 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("htmlbody"+FirstName+" "+LastName+u"！ 你提交了表单！/body/html")

return response

else:

response=HttpResponse()

response.write('htmlscript 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="htmlbody"+FirstName+" "+LastName+"！ 你提交了表单！"+"/body/html"

return HttpResponse(html)

else:

response=HttpResponse()

response.write('htmlscript 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('htmlbody'+FirstName+LastName+u'！ 你提交了表单！/body/html')

return response

else:

response=HttpResponse()

response.write('htmlscript 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

复制代码 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/(?Ppath.*)$','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

复制代码 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.

)