java script

간단한 계산기

디자인인스 2011. 1. 7. 12:01
// [1단계] 아래의 소스코드를 <HEAD>와 </HEAD> 사이에 붙여 넣으세요

<script language="JavaScript">
<!--
function a_plus_b(form) {
        a=eval(form.a.value)
        b=eval(form.b.value)
        c=a+b
        form.ans.value = c
}
function a_minus_b(form) {
        a=eval(form.a.value)
        b=eval(form.b.value)
        c=a-b
        form.ans.value=c
}
function a_times_b(form) {
        a=eval(form.a.value)
        b=eval(form.b.value)
        c=a*b
        form.ans.value=c
}
function a_div_b(form) {
        a=eval(form.a.value)
        b=eval(form.b.value)
        c=a/b
        form.ans.value = c
}
function a_pow_b(form) {
        a=eval(form.a.value)
        b=eval(form.b.value)
        c=Math.pow(a, b)
        form.ans.value = c
}
// -->
</script>

// 여기까지 입니다

// [2단계] 아래의 코드를 원하는 위치에 복사 해 넣으세요


<form name="formx"><input type=text size=4 value=12 name="a">
        <input type="button" value="  +  " onClick="a_plus_b(this.form)">
        <input type="button" value="  -  " onClick="a_minus_b(this.form)">
        <input type="button" value="  x  " onClick="a_times_b(this.form)">
        <input type="button" value="  /  " onClick="a_div_b(this.form)">
        <input type="button" value="  ^  " onClick="a_pow_b(this.form)">
        <input type="number" size=4 value=3 name="b"> = <input type "number" value=0 name="ans" size=9>
</form>
<!---->