html中加法,html+js实现的简单计算器(加减乘除)

function setOp(op, opTips)

{

var tb=document.getElementById("tb_calc");

tb.style.display = "none";

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").value);

var y = parseInt(document.getElementById("y").value);

var op = document.getElementById("op").innerText;

var z = "";

switch(op)

{

case '+':

z = x + y;

break;

case '-':

z = x - y;

break;

case '*': ;

z = x * y;

break;

case '/': ;

z = x / y;

break;

default:

z = '';

}

console.log(x, op, y, '=', z);

document.getElementById("z").innerText = z;

}

截图如下: