HTML+JS 实现简单的计算器代码 (加减乘除)
<! DocType html> <html> <head> <meta http-äquiv = "content-type" content = "text/html; charset = utf-8"/> <title> </title> </head> <body> <table> <tr> <td> <Eingabe type = "button =" add "addclick =" onclick = "addclick =" addclick = "addclick =" addclick = "addclick =" addclick = "addclick =" addclick = " 'add'); "/> </td> <td> <Eingabe type =" button "value =" miner "onclick =" setop ('-', 'miner'); onclick = "setop ('/', 'divide');"/> </td> </tr> </table> <table id = "tb_calc" style = "display: keine; <td> <input id = "y" type = "text" value = "" name = "y"/> </td> <td> <input id = "optip" type = "button" value = "" onclick = "calc ();"/> </td> <td> <lable id = "z" name = " type = "application/javaScript"> Funktionsetop (op, optips) {var tb = document.getElementById ("Tb_calc"); tb.style.display = "Keine"; document.getElementById ("x"). value = ""; document.getElementById ("y"). value = ""; document.GetElementById ("z"). InnerText = ""; document.getElementById ("op"). InnerText = op; document.getElementById ("optips"). value = optips; tb.style.display = "block"; } function Calc () {var x = parseInt (document.getElementById ("x"). Wert); var y = parseInt (document.getElementById ("y"). Wert); var op = document.getElementById ("op"). InnerText; var z = ""; Switch (op) {case ' +': z = x + y; brechen; case ' -': z = x - y; brechen; Fall '*': ; z = x * y; brechen; Fall '/': ; z = x / y; brechen; Standard: z = ''; } console.log (x, op, y, '=', z); document.getElementById ("z"). InnerText = z; } </script> </body> </html>截图如下 ：
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