<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Ajax 提交</title>
<script type="text/javascript" src="/static/jquery.js"></script>
<script type="text/javascript">
jQuery(document).ajaxSend(function(event, xhr, settings) {
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
function sameOrigin(url) {
// url could be relative or scheme relative or absolute
var host = document.location.host; // host + port
var protocol = document.location.protocol;
var sr_origin = '//' + host;
var origin = protocol + sr_origin;
// Allow absolute or scheme relative URLs to same origin
return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
(url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
// or any other URL that isn't scheme relative or absolute i.e relative.
!(/^(\/\/|http:|https:).*/.test(url));
}
function safeMethod(method) {
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
if (!safeMethod(settings.type) && sameOrigin(settings.url)) {
xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken'));
}
});
</script>
<script type="text/javascript">
$(function(){
$.ajaxSetup({
data:{csrfmiddlewaretoken: '{{ csrf_token }}'}
});
$("#Comment").click(function(){
$.post('{% url 'AjaxRequest' %}',{"a":$("#A").val(),"b":$("#B").val()},function(data){
$("#result").html(data);
});
});
});
</script>
</head>
<body>
<label for="A"><input id="A" name="ValueA" type="text"></label>
<label for="B"><input id="B" name="ValueB" type="text"></label>
<input type="button" id="Comment" value="开始计算">
<h1>计算的结果为:<span id="result"></span></h1>
</body>
</html>
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def AjaxRequest(request):
if request.POST:
a =request.POST["a"]
b=request.POST["b"]
c=int(a)+int(b)
return JsonResponse(c,safe=False)
else:
return render_to_response('AjaxDemo.html',context_instance=RequestContext(request))
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需要注意:
(1)在使用引入的JS代码后,需要添加如下代码,这样JS就可以自动帮我们生成"csrfmiddlewaretoken"标识,接下来你就可以使用$.post()了
$.ajaxSetup({
data:{csrfmiddlewaretoken: '{{ csrf_token }}'}
});
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(2)context_instance=RequestContext(request) 并不是必须的
(3)Get请求不需要以上操作,直接使用$.get()即可
注:本文使用的Django1.8.3版本进行测试。
以上就是本文的全部内容,希望对大家的学习有所帮助。