JS操作DOM

本文最后更新于:2023年3月30日 下午

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
window.onload = function(){
var tab = document.getElementById('tab');
var btn = document.getElementById('btn');
var search = document.getElementById('search');
var ipt = document.getElementById('ipt');
var sort = document.getElementById('sort');
var oldColor = '';
var nows = tab.tBodies[0].rows.length + 1;
var sortSignal = true;
// 隔行变色
setColor();
function setColor() {
for (var i = 0; i < tab.tBodies[0].rows.length; i++) {
tab.tBodies[0].rows[i].style.background = i % 2 ? '#ccc' : '';
tab.tBodies[0].rows[i].onmouseover = function() {
oldColor = this.style.backgroundColor;
this.style.background = 'yellow';
}
tab.tBodies[0].rows[i].onmouseout = function() {
this.style.background = oldColor;
}
}
}
// 搜索功能
search.onclick = function() {
// 转换为小写
var txt = ipt.value.toLowerCase();
var signal = false;
var noNull = true;
if(txt === '') {
alert('请输入文字再查找');
return;
}
for (var i = 0; i < tab.tBodies[0].rows.length; i++) {
var target = tab.tBodies[0].rows[i].cells[1].innerHTML.toLowerCase();
// 将搜索的东西用' '拆分成数组
var arr = txt.split(' ');
oldColor = tab.tBodies[0].rows[i].style.backgroundColor;
for (var j = 0; j < arr.length; j++) {
signal = target.search(arr[j]) !== -1;
break;
}
if(signal){
tab.tBodies[0].rows[i].style.background = 'yellow';
}else{
tab.tBodies[0].rows[i].style.background = oldColor;
}
}
ipt.value = '';
}
// 添加删除功能
btn.onclick = function() {
var oTr = document.createElement('tr');
var oTd = null;
var oTd = document.createElement('td');
oTd.innerHTML = nows++;
oTr.appendChild(oTd);

oTd = document.createElement('td');
oTd.innerHTML = ipt.value;
oTr.appendChild(oTd);

oTd = document.createElement('td');
oTd.innerHTML = '<a href='javascript:;'>删除</a>';
oTr.appendChild(oTd);
oTd.getElementsByTagName('a')[0].onclick = function() {
tab.tBodies[0].removeChild(this.parentNode.parentNode);
}
tab.tBodies[0].appendChild(oTr);
ipt.value = '';
setColor();
}
// 排序
sort.onclick = function() {
var arr = [];
// 现将其转换为数组
for(var i = 0; i < tab.tBodies[0].rows.length; i++) {
arr[i] = tab.tBodies[0].rows[i];
}
// 排序实现
arr.sort(function(arr1,arr2) {
if(sortSignal){
return parseInt(arr1.cells[0].innerHTML)
- parseInt(arr2.cells[0].innerHTML);
}else{
return parseInt(arr2.cells[0].innerHTML)
- parseInt(arr1.cells[0].innerHTML);
}
});
for (var i = 0; i < arr.length; i++) {
tab.tBodies[0].appendChild(arr[i]);
setColor();
}
// sortSignal=!sortSignal;
if (sortSignal) {
sortSignal = false;
sort.value = '降序';
}else{
sortSignal = true;
sort.value = '升序';
}
}
}
</script>
</head>
<body>
<input type="text" id="ipt"/>
<input type="button" id="btn" value="添加"/>
<input type="button" id="search" value="搜索"/>
<input type="button" id="sort" value="升序"/>
<table border="1" width="600" id="tab">
<thead>
<td>ID</td>
<td>姓名</td>
<td>操作</td>
</thead>
<tbody>
<tr>
<td>3</td>
<td>刘彪</td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>刘鱼阳</td>
<td></td>
</tr>
<tr>
<td>2</td>
<td>刘铭俊</td>
<td></td>
</tr>
<tr>
<td>5</td>
<td>XXX</td>
<td></td>
</tr>
<tr>
<td>4</td>
<td>二狗</td>
<td></td>
</tr>
<tr>
<td>7</td>
<td>八戒</td>
<td></td>
</tr>
<tr>
<td>6</td>
<td>老王</td>
<td></td>
</tr>
<tr>
<td>8</td>
<td>悟空</td>
<td></td>
</tr>
</tbody>
</table>
</body>
</html>

查看演示


JS操作DOM
https://seven3.site/js/JS操作DOM/
作者
Seven3s
发布于
2015年1月30日
许可协议