My Asp.net mvc action result is passing a query string with the name "RowTobeHighLighted". My goal is to retrieve the value of this query string from the controller action and use it in a text/javascript script. I attempted using Request.Querystring() in JavaScript, but it did not work.
Is there a way to obtain the query string value from the controller action? Alternatively, can I access the value of viewdata within a
<script type="text/javascript">Unfortunately, Request.QueryString is not suitable for this task as it operates solely on the server side.
Here are a few alternatives to consider:
One option is to utilize Request.QueryString to embed the value within a script
var myValue = <% = HttpUtilityRequest.HtmlEncode(QueryString["myValue"]") %>
Another approach is to transmit the query string value as view data to the view and then access it in your JavaScript like so
var myValue = <% HttpUtilityRequest.HtmlEncode(ViewData["myValue"]) %>
Alternatively, you could analyze the query string in JavaScript itself
var qs = new Querystring() var myValue = qs.get("myValue")
It's important to remain vigilant against Cross Site Scripting attacks when using any of these methods.
To pass data on the client side, utilize the Querystring method.
On the server side, provide a value to JavaScript by using the following code:
<%= "var RowTobeHighLightedUrl = '" + Request.QueryString["RowTobeHighLighted"] + "';"%>
If the RowTobeHighLighted needs to be JavaScript Escape (instead of HtmlEncode).
Utilize TempData to handle temporary messages in this scenario.
Within your controller:
TempData["RowToHighlight"] = rowNumber;
Then, in the view:
<% foreach (var row in Model) { %>
<tr>
<td id="row_<%= row.id %>"<%= (row.id == (int)TempData["RowToHighlight"]) ? " class="highlighted" : "" %>>my row</td>
</tr>
<% } %>
If you are using jQuery, for instance, to fade out elements (within your jQuery document.ready block):
<% if (TempData["RowToHighlight"] != null) { %>
$("#row_<%= (int)TempData["RowToHighlight"] %>").fadeOut();
<% } %>
Remember to apply necessary escaping and encoding as needed.
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