一、键盘事件
onkeydown触发， keyCode键盘编码 ctrlKey altKey shiftKey
键盘控制div移动
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
#div1{ width:100px; height:100px; background:red; position:absolute;}
</style>
<script>
document.onkeydown = function(ev){
var oEvent = ev || event;
var oDiv = document.getElementById('div1');
switch(oEvent.keyCode){
case 37:
oDiv.style.left = oDiv.offsetLeft - 10 +'px';
break;
case 38:
oDiv.style.top = oDiv.offsetTop - 10 +'px';
break;
case 39:
oDiv.style.left = oDiv.offsetLeft + 10 +'px';
break;
case 40:
oDiv.style.top = oDiv.offsetTop + 10 +'px';
break;
}
};
</script>
</head>
<body>
<div id="div1"></div>
</body>
</html>
ctrl+enter提交留言
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script>
window.onload = function(){
var oTxt1 = document.getElementById('txt1');
var oTxt2 = document.getElementById('txt2');
var oBtn = document.getElementById('btn1');
oBtn.onclick = function(){
oTxt1.innerHTML += oTxt2.value+'\n';
oTxt2.value = '';
};
document.onkeydown = function(ev){
var oEvent = ev || event;
//alert(oEvent.keyCode);
if(oEvent.ctrlKey && oEvent.keyCode == 13 ){
oBtn.click();
}
};
};
</script>
</head>
<body>
<textarea id="txt1" rows="10" cols="40"></textarea><br />
<input type="text" id="txt2" /><input type="button" id="btn1" value="提交"/>(ctrl+enter)
</body>
</html>