Source code
Revision control
Copy as Markdown
Other Tools
/* Any copyright is dedicated to the Public Domain.
function checkDOM(target, data) {
// assuming whitespace and the XML declaration are not in the DOM.
var piNode = document.firstChild;
if (!piNode || piNode.nodeType != Node.PROCESSING_INSTRUCTION_NODE ||
piNode.target != target || piNode.data != data) {
document.documentElement.style.backgroundColor = "red";
}
}