WebView2 ExecuteScriptAsync fails when script is executed a second time

[HaavardL]

What happened?

Microsoft.Web.WebView2 1.0.2164-prerelease

Running the script once is OK.
Running the script a second time results in an exception.
Is this an error or a limitation?
Is there a way to "clean up" between script executions?

Script:
let clickButton = function (doc, buttonId) {
let button = doc.getElementById(buttonId);
if (button != null) {
button.click();
}
};
const nextButtonId = "someButtonId";
clickButton(document, nextButtonId);
//...More script code...

Exception from ExecuteScriptWithResultAsync:
{
"columnNumber": 0,
"exception": {
"className": "SyntaxError",
"description": "SyntaxError: Identifier 'clickButton' has already been declared",
"objectId": "-8654842674382291014.2.2",
"subtype": "error",
"type": "object"
},
"exceptionId": 1,
"lineNumber": 0,
"scriptId": "61",
"text": "Uncaught"
}

Importance

Moderate. My app's user experience is affected, but still usable.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

118.0.2088.76

SDK Version

1.0.2164.0

Framework

WPF

Operating System

Windows 10

OS Version

19045.3636

Repro steps

Execute script twice

Regression

Don't know

Last working version (if regression)

No response

[vbryh-msft]

Hi, your issue is with JS, not ExecuteScript API - you are redeclaring clickButton. May try to do it in 2 calls - declare in first and do click in second. Then ExecuteScript only for clickling second time.

[HaavardL]

Thanks for the response, but I don't understand what you mean. I am a novice to JS so you probably have a point. I tried to declare clickButton at the top of the script an use it further down.
The essence of the problem is that the script is working fine if I execute it one time, but fails if I execute it one more time.

[vbryh-msft]

I was thinking

script1 = "let clickButton = function (doc, buttonId) {
let button = doc.getElementById(buttonId);
if (button != null) {
button.click();
}
};";

script2 = "clickButton(document, "someButtonId");";

ExcuteScript(script1); // only once
ExcuteScript(script2); // can do multiple  - whenever you need to press the button

Hope it make sense

[HaavardL]

Thanks again. I will try it out tomorrow.

[HaavardL]

Fantastic! It worked. I've never seen a tutorial/example that utilizes this pattern. Thanks again!