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<html><body><h1>JavaScript Number Methods</h1><h2>The Number.parseInt() Method</h2><p>Parse a string and returns the first integer:</p><p id="demo"></p><script>document.getElementById("demo").innerHTML =Number.parseInt("10", 10)+ "<br>" +Number.parseInt("010")+ "<br>" +Number.parseInt("10", 8)+ "<br>" +Number.parseInt("0x10")+ "<br>" +Number.parseInt("10", 16);</script></body></html>