Passing value from C# codebehind to javascript

Question

What is the best way to pass a value from C# code to javascript? Currently I am setting an asp.net hidden field in the Page_Load method.

Also if I pass a value using GET like

Response.Redirect("myurl.com/myPage.aspx?id=300");

how can I get the value of id from myPage using javascript?

Is there a nice way to do this in jquery?

Answer 1

function getParameter(name)
{
    name = name.replace(/[[]/,"\[").replace(/[]]/,"\]");
    var results = new RegExp("[\?&]" + name + "=([^&#]*)").exec(window.location.href);

    return (results != null ? results[1] : "");
}

Use the following code to get your parameter: getParameter("id")

Answer 2

如果要使用一个特定的变量，则可以使用document.location属性，并在id=之后分割出一部分

Answer 3

Tim's idea is good. You could also directly insert the values into the javascript with something like var idValue = '<%= SomeProtectedProperty %>'; within your script. That's for if you know it at load time.