Just starting out with C# and looking to retrieve my C# value in javascript
After some research, I came across
var javacriptVariable = "<%=CsVariable%>";<%=CsVariable%> as a string.
Any suggestions on how I can successfully extract the value from my C# file?
My typical approach involves setting the value of a C# variable to a hidden input field, allowing you to access the data in JavaScript. If you are working with ASP.NET (please correct me if I'm mistaken), you can do something like this:
<asp:HiddenField runat="server" id="hdnCsVariable" />
Then, in the code-behind (.cs) file during page load:
hdnCsVariable.Value = "My C# Value";
Finally, in JavaScript, since ASP.NET often generates complex IDs, you can use an "ends with" selector to retrieve your hidden input field:
console.log(document.querySelector("input[id$='hdnCsVariable']").value); // logs "My C# Value"
Although Dans method is effective, I have another approach that I prefer to use..
For example:
this.Page.ClientScript.RegisterStartupScript(this.GetType(), "script", string.Format("var myVariable = {0};", 123), true);By placing your script in the 3rd argument, it will be rendered on the page. Consider using this in a PostBack event or within onPageLoad.
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