SyntaxError: 无效的正则表达式标志 ajax, Javascript
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SyntaxError: invalid regular expression flag ajax, Javascript
提问by Da Artagnan
This is my controller,
这是我的控制器，
public ActionResult ReturnMethodTest(int id)
{
string name = "John";
return Json( new {data=name});
}
I am trying to get data from this controller by using code below but I am getting 
.
我试图通过使用下面的代码从这个控制器获取数据，但我得到.
Can you please tell me what am I doing wrong?
你能告诉我我做错了什么吗？
$.ajax({
url: @Url.Action("ReturnMethodTest", "HomeController"),
data: {
id: 5,
},
success: function (data) {
console.log(data);
}
});
回答by Cerbrus
@Url.Actiononly returns the action url's string, without quotes around it.
@Url.Action只返回操作 url 的字符串，不带引号。
You'll need to wrap that url in quotes.
您需要将该网址用引号括起来。
Replace:
代替：
url: @Url.Action("ReturnMethodTest", "HomeController"),
With:
和：
url: '@Url.Action("ReturnMethodTest", "HomeController")',
// ^ ^
Otherwise, the file returned to the client will contain:
否则，返回给客户端的文件将包含：
url: /HomeController/ReturnMethodTest,
Which isn't valid JS, nor what you want. The replacement gives the following result:
这不是有效的 JS，也不是你想要的。替换结果如下：
url: '/HomeController/ReturnMethodTest',
Which is a perfectly valid JavaScript string.
这是一个完全有效的 JavaScript 字符串。
回答by Aftab Ansari
Please remove the Controllersuffix while specifying in url.
中Controller指定时请删除后缀url。
Try it this way:
试试这个方法：
url: '@Url.Action("ReturnMethodTest", "Home")'
回答by Noumenon
A Javascript regular expression literallooks like this -- a pattern enclosed between slashes:
一个 Javascript正则表达式文字看起来像这样——一个包含在斜杠之间的模式：
var re = /pattern/flags;
If you interpolate a variable that begins with a slash but do not put quotation marks around it, it will be interpreted as a regular expression, not a string. Another time this comes up is with JSP expression language, where you should write the first, not the second:
如果您插入一个以斜杠开头的变量但没有在它周围加上引号，它将被解释为正则表达式，而不是字符串。另一次出现这种情况是使用 JSP 表达式语言，您应该在其中编写第一个，而不是第二个：
var spinner = "<img src='${contextPath}/images/ajax-loader-small.gif'>"
var spinner = "<img src='" + ${contextPath} + "/images/ajax-loader-small.gif'>"
