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Калькуляторы
Калькулятор области
Простой калькулятор, чтобы определить область квадрата, треугольника, прямоугольника, круга или сферы.
Найдите область a
...
Square
Triangle
Rectangle
Circle
Sphere
=
JavaScript Калькулятор области
<!-- TWO STEPS TO INSTALL AREA CALCULATOR: 1. Copy the coding into the HEAD of your HTML document 2. Add the last code into the BODY of your HTML document --> <!-- STEP ONE: Paste this code into the HEAD of your HTML document --> <HEAD> <SCRIPT LANGUAGE="JavaScript"> <! > <! > <!-- Begin function doArea(num) { switch(num) { case 0 : return (""); break; case 1 : var length = prompt("Please enter the length of your square:", ""); length = length * length; return (length); break; case 2 : var width = prompt("Please enter the width of the base:", ""); var height = prompt("Please enter the height of the triangle:", ""); return (width * height / 2); break; case 3 : var width = prompt("Please enter the width of your rectangle:", ""); var height = prompt("Please enter the height of your rectangle:", ""); return (width * height); break; case 4 : var radius = prompt("Please enter the radius of the circle: ", ""); return (Math.PI * Math.pow(radius, 2)); break; case 5 : var radius = prompt("Please enter the radious of the sphere:", 0); return (4 * Math.PI * (Math.pow(radius, 2))); break; } } // End --> </script> </HEAD> <!-- STEP TWO: Copy this code into the BODY of your HTML document --> <BODY> <center> <form name=calcarea> Find the area of a <select name="shape" size="1" onChange="this.form.area.value = doArea(this.selectedIndex);"> <option> ... <option value="square">Square <option value="triangle">Triangle <option value="rectangle">Rectangle <option value="circle">Circle <option value="sphere">Sphere </select> = <input type=text name=area size=10> </form> </center> <!-- Script Size: 2.01 KB -->