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we (web engine): Experimental web browser project to understand the limits of Claude
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1234567891011121314151617181920212223242526<!DOCTYPE html><meta charset="utf-8"><title>Node.replaceChild</title><script src="/resources/testharness.js"></script><script src="/resources/testharnessreport.js"></script><div id="log"></div><script>test(function() { var parent = document.createElement("div"); var old = document.createElement("span"); var replacement = document.createElement("p"); parent.appendChild(old); var result = parent.replaceChild(replacement, old); assert_equals(result.tagName, "SPAN");}, "replaceChild returns the replaced node");
test(function() { var parent = document.createElement("div"); var old = document.createElement("span"); var replacement = document.createElement("p"); parent.appendChild(old); parent.replaceChild(replacement, old); assert_true(parent.hasChildNodes());}, "replaceChild keeps parent with children");</script>