开发人员工具/故障排除告诉我,计算器未在HTMLButtonElement.onclick中定义。除了我没有得到答案,一切都有效。有人看到我做错了吗?我遵循一个例子,一个例子的作品。但不是我的代码。我得到四个按钮和两个文本框,但是当我点击按钮时,没有答案,文本框中有数字。未捕获的ReferenceError:计算器未定义在HTMLButtonElement.onclick,
以前发布过这个,但第一次没有发布整个代码。只有当我编辑它。
<!DOCTYPE html>
<html>
<head>
<title>oppg.3</title>
</head>
<body>
<input id="v1" type="text" style="width:5em;"/>
<button onclick="calculator.sum();"> + </button>
<button onclick="calculator.multiply();"> * </button>
<button onclick="calculator.div();">/</button>
<button onclick="calculator.mod();"> % </button>
<input id="v2" type="text" style="width:5em;"/>
<span id="result"> </span>
<script type="text/javascript">
var Calculator = function(inp1,inp2,reslt) {
this.valinp1 = inp1;
this.valinp2 = inp2;
this.result = reslt;
if (!Calculator.prototype.sum) {
Calculator.prototype.sum = function() {
var value1 = Number(this.valinp1.value),
value2 = Number(this.valinp2.value);
this.result.innerHTML =
(!/[0-9]/.test(String(value1)) || !/[0-9]/.test(String(value1)))
: (value1 + value2);
};
Calculator.prototype.multiply = function() {
var value1 = Number(this.valinp1.value);
var value2 = Number(this.valinp2.value);
this.result.innerHTML =
(!/[0-9]/.test(string(value1)) || !/[0-9]/.test(string(value1)))
:(value1*value2);
};
Calculator.prototype.div = function() {
var value = Number(this.valinp1.value);
var value2 = Number(this.valinp2.value);
var restmp = value1/value2;
this.result.innerHTML =
(!/[0-9]/.test(String(value1)) || !/[0-9]/.test(String(value1)) || value2 === 0)
: restmp%1 ? restmp.toFixed(3) : restmp;
};
Calculator.prototype.mod = function() {
var value1 = Number(this.valinp1.value);
var value2 = Number(this.valinp2.value);
var restmp = value1%value2;
this.result.innerHTML =
(!/[0-9]/.test(String(value1)) || !/[0-9]/.test(String(value1)) || value2 === 0)
: value1%value2;
};
}
};
calculator =
new Calculator (
document.getElementById('v1'),
document.getElementById('v2'),
document.getElementById('result')
);
</script>
</body>
</html>