我有这段代码。
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js"> </script>
<script>
Event.observe('clickme', 'click', function(event) {
alert('clicked');
});
Event.observe('uploadme', 'change', function(event) {
alert('hola');
});
</script>
</head>
<body>
<form enctype="multipart/form-data" action="insertimage.php" method="post" name="changer">
<input name="MAX_FILE_SIZE" value="10240000" type="hidden">
<input id="uploadme" type="file">
<input type="button" id="clickme" value="Upload Stuff!" />
<input id="sub" type="submit" />
</form>
</body>
</html>
这不起作用。我无法得到任何警报。有人可以建议一个解决方案吗?
答案 0 :(得分:0)
尝试在正文结束标记上方添加脚本,例如:
</head>
<body>
<form enctype="multipart/form-data" action="insertimage.php" method="post" name="changer">
<input name="MAX_FILE_SIZE" value="10240000" type="hidden">
<input id="uploadme" type="file">
<input type="button" id="clickme" value="Upload Stuff!" />
<input id="sub" type="submit" />
</form>
<script>
Event.observe('clickme', 'click', function(event) {
alert('clicked');
});
Event.observe('uploadme', 'change', function(event) {
alert('hola');
});
</script>
</body>
演示:jsFiddle
或者,如果您想将脚本标记保留在 head 中,则其他选项为:
Event.observe(window, 'load', function() {
Event.observe('clickme', 'click', function(event) {
alert('clicked');
});
Event.observe('uploadme', 'change', function(event) {
alert('hola');
});
});