Django ajax 检测用户名是否已被注册
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2022-06-28 23:37:13
添加一个 register.html 页面 修改 views.py 修改 urls.py ......
添加一个 register.html 页面
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
</head>
<body>
<form>
<p>用户名<input id="username" type="text" name="username" onblur="func1(this)" />
<span id="error"></span>
</p>
<p>密码<input type="text" name="pwd" /></p>
<input type="submit" value="submit">
</form>
<script>
function func1(self) {
var username=self.value;
var xmlhttp=createxmlhttprequest();
xmlhttp.open("post","/ajax_register/",true);
xmlhttp.setrequestheader("content-type", "application/x-www-form-urlencoded");
xmlhttp.send("username="+username);
xmlhttp.onreadystatechange=function () {
if(xmlhttp.readystate===4 && xmlhttp.status===200){
var s=xmlhttp.responsetext
if (s=="1"){
document.getelementbyid("error").innerhtml="用户名已经注册!"
}
}
}
}
function createxmlhttprequest() {
var xmlhttp;
try{
xmlhttp = new xmlhttprequest();
} catch (e) {
try {
// 适用于ie6
xmlhttp = new activexobject("msxml2.xmlhttp");
}catch (e) {
try {
// 适用于ie5.5，以及ie更早版本
xmlhttp = new activexobject("microsoft.xmlhttp");
}catch (e) {
}
}
}
return xmlhttp;
}
</script>
</body>
</html>
修改 views.py
from django.http import httpresponse
from django.shortcuts import render
# create your views here.
def ajax_register(request):
if request.method=="post":
username=request.post.get("username")
if username=="klvchen":
return httpresponse("1")
return httpresponse("0")
return render(request,"register.html")
修改 urls.py
from django.contrib import admin
from django.urls import path
from app01 import views
urlpatterns = [
path('admin/', admin.site.urls),
path('ajax_register/', views.ajax_register),
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