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How do I access ViewBag from JS

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走了就别回头了
走了就别回头了 2020-12-08 19:51

My attempted methods.

Looking at the JS via browser, the @ViewBag.CC is just blank... (missing)

        var c = \"#\" + \"@ViewBag.CC\";
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  • 情书的邮戳
    2020-12-08 20:06

    ViewBag is server side code.
    Javascript is client side code.

    You can't really connect them.

    You can do something like this:

    var x = $('#' + '@(ViewBag.CC)').val();

    But it will get parsed on the server, so you didn't really connect them.

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  • 小鲜肉
    2020-12-08 20:17 
    <script type="text/javascript">
      $(document).ready(function() {
                showWarning('@ViewBag.Message');
      });

</script>

    You can use ViewBag.PropertyName in javascript like this.

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  • 醉梦人生
    2020-12-08 20:19

    try: var cc = @Html.Raw(Json.Encode(ViewBag.CC)

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  • 鱼传尺愫
    2020-12-08 20:25

    if you are using razor engine template then do the following

    in your view write :

    <script> var myJsVariable = '@ViewBag.MyVariable' </script>

    UPDATE: A more appropriate approach is to define a set of configuration on the master layout for example, base url, facebook API Key, Amazon S3 base URL, etc ...```

    <head>
 <script>
   var AppConfig = @Html.Raw(Json.Encode(new {
    baseUrl: Url.Content("~"),
    fbApi: "get it from db",
    awsUrl: "get it from db"
   }));
 </script>
</head>

    And you can use it in your JavaScript code as follow:

    <script>
  myProduct.fullUrl = AppConfig.awsUrl + myProduct.path;
  alert(myProduct.fullUrl);
</script>
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  • 南旧
    2020-12-08 20:26

    You can achieve the solution, by doing this:

    JavaScript:

    var myValue = document.getElementById("@(ViewBag.CC)").value;

    or if you want to use jQuery, then:

    jQuery

    var myValue = $('#' + '@(ViewBag.CC)').val();
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