伪Ajax，非XMLHttpRequest

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伪Ajax，非XMLHttpRequest，iframe标签

# iframe标签,不刷新发送Http请求# view.pydef autohome(request):    if request.method == 'GET':        return render(request,'autohome.html')# autohome.html<body><div>    <input type="text" id="text1">    <input type="button" value="提交" onclick="changeSrc()"></div><iframe id="text2" style="width: 1000px;height: 2000px" src="http://www.autohome.com.cn"></iframe></body><script src="/static/jquery-3.2.1.js"></script><script>    function changeSrc() {        /*        var cont = $('#text1').val();        $('#text2').attr('src',cont);        */        var cont = document.getElementById('text1').value;        document.getElementById('text2').src = cont    }</script>

# iframe + form 进行伪Ajax# views.pydef fake_ajax(request):    if request.method == 'GET':        return render(request,'fake_ajax.html')    else:        print('post.ok')        print(request.POST.get('user'))        return HttpResponse('ok')# fake_ajax.html<body><input type="text"><form id="f1" action="/fake_ajax/" target="ifr" method="post">    <iframe id="ifr" name="ifr" style="display: none"></iframe>    <input type="text" name="user" />    <input type="submit" /></form></body>

# 加上伪造的'回调函数'# views.pydef fake_ajax(request):    if request.method == 'GET':        return render(request,'fake_ajax.html')    else:        print('post.ok')        content = request.POST.get('user')        return HttpResponse(content)# fake_ajax.html   <body><input type="text"><form id="f1" action="/fake_ajax/" target="ifr" method="post">    <iframe id="ifr" name="ifr" style="display: none"></iframe>    <input type="text" name="user" />    <a onclick="submitForm()">提交</a></form><script>    function submitForm() {        document.getElementById('ifr').onload = loadIframe;        document.getElementById('f1').submit();    }    function loadIframe() {        var content =  document.getElementById('ifr').contentWindow.document.body.innerText;        alert(content)    }</script></body>

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