[英]Submit a form with Ajax
I'm making a user script for a site, and my goal is to submit a form on a page that I haven't opened. 我正在为网站制作用户脚本,我的目标是在尚未打开的页面上提交表单。 If I remove all unneeded bits from the page with the form that I want to submit, this is what is left (censoring the links):
如果我使用要提交的表单从页面中删除所有不需要的位,则剩下的内容(检查链接):
<form action="http://foo.com/supply/" method="POST" name="supplyContractForm">
<input type="hidden" name="supplyContractData[selected][]" value="2244068">
<input type="type" name="supplyContractData[party_quantity][2244068]" value="123">
<input type="text" value="0" name="supplyContractData[quality_constraint_min][2244068]">
<input type="submit" name="applyChanges">
</form>
It's all about the third line: with the 'value="123"'. 这一切都与第三行有关:带有'value =“ 123”'。 I want to change that value to "222".
我想将该值更改为“ 222”。 What do I do: I change the input value from "123" to "222", I press the submit button, and the form submits: the page reloads, and the value shown is "222".
我该怎么做:我将输入值从“ 123”更改为“ 222”,按下提交按钮,然后表单提交:页面重新加载,显示的值为“ 222”。 Exactly as I want.
正是我想要的。
Now, this was all manual, and I want it scripted. 现在,所有这些都是手动的,我希望将其编写为脚本。
This works: 这有效:
$("input:submit").click();
However, this doesn't work: 但是,这不起作用:
$("form").submit();
And this doesn't work either: 而且这也不起作用:
$.post($("form").attr("action"), $("form").serialize())
How can I post this form using Ajax, in a way I can change the value from http://foo.com/main/ ? 如何使用Ajax来发布此表单,从而可以从http://foo.com/main/更改值?
Note: I can only do things client-side, I'm just making a user script, and I can't see the server-side code. 注意:我只能在客户端执行操作,我只是在编写用户脚本,而看不到服务器端代码。
This would do the trick 这可以解决问题
Html, notice the addedd class for cleaner js: HTML,请注意清洁器js的添加类:
<form action="http://foo.com/supply/" method="POST" name="supplyContractForm">
<input type="hidden" name="supplyContractData[selected][]" value="2244068">
<input class="changer" type="type" name="supplyContractData[party_quantity][2244068]" value="123">
<input type="text" value="0" name="supplyContractData[quality_constraint_min][2244068]">
<input type="submit" name="applyChanges">
</form>
Js: Js:
$('form input.changer').val('222');
$('input:submit').click();
The reason why $('form').submit() might not work would be because $('form') matches multiple element, ie do you have multiple forms in your html? $('form')。submit()可能不起作用的原因是因为$('form')匹配多个元素,即您的html中是否有多个表单? if so make the selector more unique, via either adding ids or classes so your selected becomes:
如果是这样,则通过添加ID或类使选择器更加独特,从而使所选内容变为:
$('#formid').submit();
Ajax 阿贾克斯
This doesn't use ajax though, for that you would need: 但是,这不使用ajax,因此您需要:
var form = $('form');
$.ajax({
url: form.attr('action'),
type: form.attr('method'),
data: form.serialize(),
success: function(){
alert('Form posted via ajax!');
}
});
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