How to Access ViewData in javascript

问题:

I am having a problem accessing the ViewData object through javascript.

I have set the ViewData object on the controller and on document.ready event of the view i am trying to see the contents of that same ViewData object like so:

     var test = <%= ViewData["NAME"].ToString() %>;
     alert(test);

I don't get an alert message after this and none of my script after this statement will run. I am assuming this script is invalid thus killing everything afterwards. I have tried a few different variations of this same script without any luck.

What am i missing here?

Thanks in advance, Billy

回答1:

Try adding some quotes around the output:

var test = '<%= ViewData["NAME"].ToString() %>';
alert(test);

Edit:

I notice you're using NAME for the key; could this name ever have a single quote in it? If it's possible that any value will ever contain one, you will want something like this instead so your page doesn't break again (although technically this seems to be more of a job for the controller or model):

var test = '<%= ViewData["NAME"].ToString().Replace("'", "\\'") %>';
alert(test);

回答2:

try

var test = '<%= ViewData["NAME"].ToString() %>';
alert(test);

(notice the quotes around <%= %>)