[Solved] What is wrong with this async script?driver.executeAsyncScript( "var callback = arguments[0]; setTimeout(function() { callback('done'); }, 500);" ); | Selenium Java

Selenium Java - JavaScriptExecutor

What is wrong with this async script?

driver.executeAsyncScript(
  "var callback = arguments[0];
  setTimeout(function() { callback('done'); }, 500);"
);

ANo error, script is correct

BsetTimeout duration too short

CCallback argument index is incorrect

DCallback called with wrong data type

Step-by-Step Solution

Solution:

Step 1: Check callback argument index
Callback is always the last argument, so arguments[0] is incorrect.
Step 2: Effect of wrong index
Using arguments[0] may refer to a different argument, causing failure to signal completion.
Final Answer:
Callback argument index is incorrect -> Option C
Quick Check:
Callback is last argument, not first [OK]

Quick Trick: Callback is last argument, not first [OK]

Common Mistakes:

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