The JSON string you have is an array with 1 object inside of it, so to access the object you have to access the array first. With a json.php that looks like this: [ { “iId”: “1”, “heading”: “Management Services”, “body”: “<h1>Program Overview</h1><h1>January 29, 2009</h1>” } ] I just tried this $.getJSON(“json.php”, function(json) { alert(json[0].body); … Read more
You may be tempted by adding your own string “Executer”: Sub StringExecute(s As String) Dim vbComp As Object Set vbComp = ThisWorkbook.VBProject.VBComponents.Add(1) vbComp.CodeModule.AddFromString “Sub foo()” & vbCrLf & s & vbCrLf & “End Sub” Application.Run vbComp.name & “.foo” ThisWorkbook.VBProject.VBComponents.Remove vbComp End Sub Sub Testing() StringExecute “MsgBox” & “””” & “Job Done!” & “””” End Sub
You can use the eval(string) method to do this. Definition eval(code, globals=None, locals=None) The code is just standard Python code – this means that it still needs to be properly indented. The globals can have a custom __builtins__ defined, which could be useful for security purposes. Example eval(“print(‘Hello’)”) Would print hello to the console. You … Read more
As B-Con mentioned, the attacker is not the one sitting at the computer so could be using the eval() already in your script as a means to pass malicious code to your site in order to exploit the current user’s session in someway (e.g. a user following a malicious link). The danger of eval() is … Read more
PHP was itself originally intended as a templating language (ie a simple method of allowing you to embed code inside HTML). As you see from your own examples, it got too complicated to justify being used in this way most of the time, so good practice moved away from that to using it more as … Read more
eval evaluates stuff like 5+3 exec executes stuff like for … >>> eval(“for x in range(3):print x”) Traceback (most recent call last): File “<stdin>”, line 1, in <module> File “<string>”, line 1 for x in range(3):print x ^ SyntaxError: invalid syntax >>> exec(“for x in range(3):print x”) 0 1 2 >>> eval(‘5+3’) 8
Probably the easiest way is to use DataBinder.Eval from System.Web.UI: var foo = new Foo() { Bar = new Bar() { Value = “Value” } }; var value = DataBinder.Eval(foo, “Bar.Value”);
Well you have a total of 4 questions, let us go one by one. 1. Why does str(list) returns how we see list on the console? How does str(list) work? What is str() and __str__()? The str() callable is to return a printable form of the object only! From the docs str(object) does not always … Read more
Javascript is a very flexible language in this regard. There are very very few cases where eval() is the right answer to any given question, and it certainly isn’t necessary here. If your a and b variables are part of an object, you can access them with string subscripts: ie myobj.a could also be referenced … Read more
The eval function is best used: Never. It’s purpose is to evaluate a string as a Javascript expression. Example: eval(‘x = 42′); It has been used a lot before, because a lot of people didn’t know how to write the proper code for what they wanted to do. For example when using a dynamic name … Read more