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<html><body><h2>JavaScript const</h2><p id="demo"></p><script>try { const PI = 3.141592653589793; PI = 3.14;}catch (err) { document.getElementById("demo").innerHTML = err;}</script></body></html><html><body><h2>JavaScript const</h2><p id="demo"></p><script>try { const PI = 3.141592653589793; PI = 3.14;}catch (err) { document.getElementById("demo").innerHTML = err;}</script></body></html>