Phiên bản đầy đủ: jsB@nk » Tính toán » Toán học » Chu vi, thể tích
URL: https://www.javascriptbank.com/area-volume-generator.html
Hiệu ứng có thể tính chu vi của hình tròn hay thể tích của hình cầu.
Phiên bản đầy đủ: jsB@nk » Tính toán » Toán học » Chu vi, thể tích
URL: https://www.javascriptbank.com/area-volume-generator.html
<SCRIPT LANGUAGE="JavaScript">// Craig Blanchette ([email protected])<!-- Beginfunction findarea(){radius = document.FORM1.areainput.value;radius2 = eval(radius*radius);answer = eval(Math.PI*Math.pow(radius,2))roundanswer = Math.round(answer);document.FORM1.codegenerator.value = 'A = PIR^2\r'+'A = PI x '+radius+'*'+radius+' \r'+'A = PI x '+radius2+'\r'+'A = '+answer+' \r'+'A = '+roundanswer;}function findcircum(){radiuscir = document.FORM1.areainput.value;diameter = eval(radiuscir*2);ciranswer = eval(radiuscir*2*Math.PI);cirRoundanswer = Math.round(ciranswer);document.FORM1.codegenerator.value = 'C = 2PIR\r'+'C = PI x 2 x '+radiuscir+' \r'+'C = PI x '+diameter+' \r'+'C = '+ciranswer+' \r'+'C = '+cirRoundanswer;}function rectarea(){side1 = document.FORM1.rect1.value;side2 = document.FORM1.rect2.value;rectanswer = eval(side1*side2);roundrect = Math.round(rectanswer);document.FORM1.codegenerator.value = 'A = B x H\r'+'A = '+side1+' x '+side2+' \r'+'A = '+rectanswer+' \r'+'A = '+roundrect}function cylarea(){cylradius = document.FORM1.areainput.value;sqradius = eval(cylradius*cylradius);cylheight = document.FORM1.cylinderheight.value;cylhr = eval(cylheight*sqradius);cylvolume = eval(Math.PI*cylradius*cylradius*cylheight);roundcyl = Math.round(cylvolume);document.FORM1.codegenerator.value = 'V = PIR^2H\r'+'V = PI x '+cylradius+' x '+cylradius+' x H \r'+'V = PI x '+sqradius+' x H\r'+'V = PI x '+sqradius+' x '+cylheight+' \r'+'V = PI x '+cylhr+' \r'+'V = '+cylvolume+' \r'+'V = '+roundcyl;}function resetval(){document.FORM1.areainput.value = 'Radius of Cirlce/Cylinder';document.FORM1.codegenerator.value = '';document.FORM1.cylinderheight.value = 'Height of Cylinder';document.FORM1.rect1.value = 'Base';document.FORM1.rect2.value = 'Height';}// End --></script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><form name="FORM1"><font face="Arial, Helvetica, Sans Serif" size="3"color="#0000FF"><b>Enter Radius of Circle/Cylinder</b></font><br><input type="text"size="15" name="areainput" onfocus="this.value=''"><br><input type="button" name="findcircumference" onclick="findcircum()"value="Get Circumference"><input type="button" name="findarea2" onclick="findarea()"value="Get Area"><p><font face="Arial, Helvetica, Sans Serif" size="3"color="#0000FF"><b>Enter Height of Cylinder</b></font><br><input type="text"name="cylinderheight" onfocus="this.value=''" size="20"><br><input type="button" name="cylinderarea" value="Get volumeof Cylinder" onclick="cylarea()"><br>(<i>Make sure you entered the radius</i>)<p><font face="Arial, Helvetica, Sans Serif" size="3"color="#0000FF"><b>The calculation and answer is below:</b></font><br><textarea name="codegenerator" rows="10" cols="30"></textarea><p><font face="Arial, Helvetica, Sans Serif" size="3"color="#0000FF"><b>Enter Measurments for Rectangle Area:</b></font><br><input type="text" name="rect1" value="Base"onfocus="this.value=''" size="20"><br><input type="text" name="rect2" value="Height"onfocus="this.value=''" size="20"><br><input type="button" name="findcircumference"onclick="rectarea()" value="Get Area">.<br><input type="button" name="reset" value="Reset"onclick="resetval()"></form><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->