JS实现输入框智能提示
程序员文章站
2022-04-18 22:24:45
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本文主要和大家分享JS实现输入框智能提示，主要以代码的形式和大家分享，希望能帮助到大家。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<script>
var keyWords = {
"传智播客": ["传智播客java视频", "传智播客.net视频", "传智播客php视频"],
"杨忠科": ["杨忠科的视频", "杨忠科的微博", "杨忠科的邮箱"],
"杨": ["杨利伟", "杨振宇", "杨过"],
"杨忠": ["杨忠科", "杨忠学", "杨忠爱国"]
};
setInterval(function () {
document.getElementById('txt').onchange();
}, 500);
onload = function () {
document.getElementById('txt').onchange = function () {
if (document.getElementById('dv')) {
document.body.removeChild(document.getElementById('dv'));
}
if (keyWords[this.value]){
var dvObj = document.createElement('p');
dvObj.id = 'dv';
dvObj.style.width = '300px';
dvObj.style.height = '200px';
dvObj.style.border = '1px solid green';
dvObj.style.position = 'absolute';
dvObj.style.left = this.offsetLeft + 'px';
dvObj.style.top = this.offsetTop + this.offsetHeight + 'px';
ulObj = document.createElement('ul');
ulObj.style.listStyleType = 'none';
ulObj.style.margin = '0';
ulObj.style.padding = '0';
for (var i = 0; i < keyWords[this.value].length; i++) {
//创建Li
var liObj = document.createElement('li');
liObj.innerText = keyWords[this.value][i]; //显示每一项内容
liObj.style.marginTop = '8px';
liObj.style.cursor = 'pointer';
//高亮显示
liObj.onmouseover = function () {
this.style.backgroundColor = 'yellow';
};
liObj.onmouseout = function () {
this.style.backgroundColor = '';
};
//添加到ul中
ulObj.appendChild(liObj);
}
//ulobj添加到层中
dvObj.appendChild(ulObj);
//层添加到body中
document.body.appendChild(dvObj);
}
}
}
</script>
</head>
<body>
<input type="text" id="txt"/>
<input type="button" value="百度一下" />
</body>
</html>
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