var x = 9.656; var res1 = x.toFixed(0); // 10 var res2 = x.toFixed(2); // 9.66 var res3 = x.toFixed(4); // 9.6560 var res4 = x.toFixed(6); // 9.656000 document.write(res1 + "<br>"); document.write(res2 + "<br>"); document.write(res3 + "<br>"); document.write(res4 + "<br>");