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<html><body><h1>JavaScript Number Methods</h1><h2>The parseFloat() Method</h2><p>Parse a string and returns the first number:</p><p id="demo"></p><script>document.getElementById("demo").innerHTML =Number.parseFloat("40.00") + "<br>" +Number.parseFloat(" 40 ") + "<br>" +Number.parseFloat("40 years") + "<br>" +Number.parseFloat("40H") + "<br>" +Number.parseFloat("H40");</script></body></html>