Is there automatic formatting for an asp:literal control?

Question

Is there a way to automatically format a string for literal insertion into JavaScript code?

Say you have this in your page:

<script type="text/javascript">
    var strvar = <asp:Literal runat="server" id="ltrStrvar"></asp:Literal>;
</script>

And in your server-side code:

protected void Page_Load(object sender, EventArgs e) {
    ltrStrvar.Text = "hello \"world\"";
}

Is there a way to automatically have it escape the string and surround it with quotes for error-free insertion into JavaScript, so all I have to do is set the Text property with an arbitrary string? I know how to do it manually but was looking for a more elegant solution.

Answer 1

您可以创建一个自定义的LiteralWithQuotationMarks用户控件，该控件在内部使用Literal控件并在缺少引号时将其括起来。

Answer 2

You could do something like this:

public string sanitizeJavascriptString(string dirtyInput)
{
    return dirtyInput.Replace("\\", "\\\\")
        .Replace("\"", "\\\"")
        .Replace("'","\\'");
}

I don't know if there is an existing escape function, but I doubt it. I'm also not 100% sure what else needs to be escaped, but I assume you can add the other characters if you know what they are.