jQuery 中的 Ajax 调用 - 未捕获的类型错误无法读取 null 的属性“错误”
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Ajax call in jQuery - uncaught typeerror cannot read property 'error' of null
提问by Richard James
I am trying to make an ajax call using the below jQuery.
我正在尝试使用下面的 jQuery 进行 ajax 调用。
But I can see in Chrome, i'm getting uncaught typeerror cannot read property 'error' of null. So this stops the class ('success') getting added. Any idea why it's doing this? Do I somehow need to declare 'error'??
但是我可以在 Chrome 中看到,我得到了未捕获的类型错误无法读取 null 的属性“错误”。所以这会阻止类('success')被添加。知道为什么要这样做吗?我是否需要以某种方式声明“错误”?
function submitForm(formData) {
$.ajax({
type: 'POST',
url: 'mailer.php',
data: formData,
dataType: 'json',
cache: false,
timeout: 7000,
success: function(data) {
$("form #form_ajax").removeClass().addClass((data.error === true) ? "error" : "success")
.html(data.msg).fadeIn('fast');
if ($('form #form_ajax').hasClass('success')) {
setTimeout("$('form #form_ajax').fadeOut('fast')", 5000);
}
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
$('form #form_ajax').removeClass().addClass('error')
.html('<p>There was an ' + errorThrown + 'error due to a ' + textStatus + ' condition.</p>').fadeIn('fast');
},
complete: function(XMLHttpRequest, status) {
$('form')[0].reset();
}
});
};
Thanks...
谢谢...
回答by SLaks
data
is null
, probably because your server didn't send any JSON.
data
is null
,可能是因为您的服务器没有发送任何 JSON。
回答by Royi Namir
edit your code to :
将您的代码编辑为:
success: function(data) {
if ( data.error) alert(data.error);
alert(data);
$("form #form_ajax").rem...
and tell me the alert msg (theres 2)
并告诉我警报消息(有 2 个)
EDIT : its not make any sense:
编辑:它没有任何意义:
do this :
做这个 :