Getting events one character at a time in Javascript
I'm pretty new to Javascript, so bear with me if this is obvious.
Basically what I would like is to implement a little interface where when you type something in a textbox it gives an event. Sort of like how this stack overflow post preview works.开发者_如何学Python I tried hooking into the OnChange event, but that only gives an event when they are done editing the field(and the textbox loses focus). What I want is each time they do anything to the text inside the textbox to get an event..
You want the keypress events described here.
Oh, try the onkeydown event.
Here's a dumb example:
<html>
<body>
<form action="" method="POST" id="myForm">
<input type="text" name="myText" onkeydown="doAlert(event);"/>
<script type="text/javascript" language="JavaScript">
function doAlert(e) {
if(window.event)
{
alert( window.event.keyCode);
}
else if(e)
{
return alert(e.which);
}
else
{
return null;
}
}
</script>
</form>
</body>
</html>
You may try the onkeyup event:
<html>
<head>
<title>Test</title>
</head>
<body>
<input type="text" name="test" value="" onkeyup="javascript:document.getElementById('preview').innerHTML = this.value;" />
<div id="preview"></div>
</body>
</html>
onkeypress might be what you want.
Try binding to one of the following events: onkeydown, onkeypress or onkeyup.
加载中,请稍侯......
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