Capture a value to a string

You can capture a string that is embedded in the HTML by using object identification. For example, sending an input value back to the server or writing it as a user defined data point.

Try it out

The following table summarizes the pages and scripts used in the example:

Example description	HTML pages	Page Description	Example scripts
Extract a number from HTML and report it to the Vuser log as a user defined data point.	dynamic_value.html	Generates a random number	CaptureStringDescriptors_2.zip CaptureStringJS_2.zip

The following example demonstrates how to capture the string and to write it to the log file and to a data point using either the Descriptors or the JavaScript ID method.

1. Record the following steps:

   1. Navigate to the dynamic_value.html page.
   2. Click the Generate button.
   3. Stop recording.

2. Click Step in the toolbar, select Miscellaneous, add an Evaluate JS on Object step and select the No. <Value> step as the object.

3. In the Object section, change the ID method of the No.<Value> step.

   Use JavaScript ID Method:

   1. Select JavaScript from the ID  method dropdown.

   2. In the JavaScript editor enter the following code:

      document.getElementById("generated_data");

      

   Use Descriptors ID Method:

   1. Select Descriptors from the ID Method dropdown.
   2. Click the Edit button to open the Descriptors editor.

   3. Change the text operator from equals to equalsIgnoreDigits.

      This method searches for No.<Value> and ignores the number that is generated every time you click Generate

4. Edit the Arguments section by adding the following code:

   Copy code

   var text = object.textContent;   //object holds the DOM object that you previously found
   var index = text.indexOf(". ");   //The indexOf() method returns the position of the first occurrence of a specified value in a string.
   var randomText = text.substr(index+2);
   TC.log("Captured String: " + randomText,"Standard");

    

   

5. Click Step in the toolbar, select Miscellaneous and drag and drop an Evaluate JavaScript step into the script.

6. In the Arguments section add the following code:

   TC.userDataPoint("JustNumbers",randomText);

7. Check the logs to verify that the string was captured.

   

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