【DOM操作】——操纵方向键
作者:互联网
var div = document.getElementById('div1');
div.style.width = '100px';
div.style.height = '100px';
div.style.backgroundColor = 'red';
div.style.position = 'absolute';
div.style.top = '0';
div.style.left = '0';
//控制方向键
document.onkeydown = function(e) {
switch (e.which){
case 38:
div.style.top = parseInt(div.style.top) - 5 + "px";
break;
case 40:
div.style.top = parseInt(div.style.top) + 5 + "px";
break;
case 37:
div.style.left = parseInt(div.style.left) - 5 + "px";
break;
case 39:
div.style.left = parseInt(div.style.left) + 5 + "px";
break;
default:
break;
}
}
标签:break,style,方向键,DOM,top,操纵,parseInt,div,left 来源: https://www.cnblogs.com/hjysunshine/p/12151730.html