回车键搜索代码 兼容性

回车键搜索代码 兼容性

---

document.onkeydown = keyDownSearch;
function keyDownSearch(e) {
// 兼容FF和IE和Opera
var theEvent = e || window.event;
var code = theEvent.keyCode || theEvent.which || theEvent.charCode;
if (code == 13) {
// 想执行的操作
return false;
}
return true;
}