JavaScript加法

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
    <h1>我的第一段 JavaScript</h1>
    <p>JavaScript 能够对事件作出反应。比如对按钮的点击：</p>
    <p id="demo">JavaScript change HTMLelement Content</p>
    <script type="text/javascript">
        function box() {
            alert('aaa');
        }
        function myFunction() {
            x = document.getElementById("demo"); // 找到元素
            x.innerHTML = "Hello JavaScript改变内容!"; // 改变内容
            alert('aaa');
        }
        function myadd() 
{
var x =parseInt( document.getElementById('a').value)
            var y = Number(document.getElementById('b').value)
            
            document.getElementById('c').value=x+y;
        }
        function mysub(a, b) {
            a + b;
        }
        function changeImage() {

            element = document.getElementById('myimage')

            if (element.src.match("pic1")) {
                element.src = "file:///C:/Users/Administrator/Pictures/img/b.bmp";
            } else {
                element.src = "file:///C:/Users/Administrator/Pictures/img/pic1.png"
            }
        }
    </script>

    <input id="a">
    <div
        style="HEIGHT: 19px; WIDTH: 22px; POSITION: relative; DISPLAY: inline"
        ms_positioning="FlowLayout">+</div>
    <input id="b">
    <input type="button" value="=合计" onclick="myadd()">
    <input id="c">
    
    <img id="myimage" onclick="changeImage()"
        src="file:///C:/Users/Administrator/Pictures/img/pic1.png">
</body>

</html>
posted on 2014-11-07 11:01 lypzxy 阅读(386) 评论(0) 编辑收藏举报