Troubleshoot: Selenium JavaScript inserting HTML into textarea [Error]

I am facing a challenge when trying to insert a large HTML code (around 3000 letters) into a Textarea. Using .sendkeys is too slow for this task, so I turned to JavaScript with Selenium and it worked well until I encountered issues while adding the HTML code itself. Here's my current code:

public void AttributeSet(string id, string value) {
    IJavaScriptExecutor js = (IJavaScriptExecutor)browser;      
    js.ExecuteScript("document.getElementById(\"" + id + "\").value = ('" + value + "');");
}

I found that this code works fine for single-line strings, but struggles with multiline strings and strings containing quotes "".

Due to the presence of numerous quotes in HTML code, I keep encountering obstacles. I have attempted various solutions such as replacing newlines with \n, and quotes with \", among other things.

Is there a simpler way to achieve this task? If there is, I would greatly appreciate any guidance you can offer. Thank you!

javascriptc#seleniumselenium-webdriver

Answer №1

Which browsers do you prefer to use? Most modern browsers should have support for es6 multiline strings.

To utilize a multiline string, simply replace the single quote character ' with the backtick `.

js.ExecuteScript("document.getElementById(\"" + id + "\").value = (`" + value + "`);");

Answer №2

After some tinkering, I managed to solve the issue by incorporating a reference to System.Web and using the following code snippet to encode the string:

HttpUtility.JavaScriptStringEncode(value);

A big shoutout to all those who offered their assistance in figuring this out.

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