HTML自动伸缩的表格Tablejs实现_javascript技巧

【使用方法】
1、将AutoTableSize.js包文件[点击这儿下载源代码]导入到你的web应用目录中；
2、引入包AutoTableSize.js，页面body底部加入：

3、编写你的脚本调用：
new AutoTableSize(); 当DOM对象中只有一个Table的时候不用指定Table的ID属性；
new AutoTableSize(table); table:既可以是表格的ID属性，也可以是表格对象；
源码AutoTableSize.js
代码如下:
/**
* @ version: 1.0
* @ author:Xing,Xiudong
* @ email: xingxiudong[at]gmail.com
* @ index: http://blog.csdn.net/xxd851116
* @ date: 2009.04.01 愚人节
* @ desciption: AutoTableSize
*/
function AutoTableSize(table) {
table = table || document.getElementsByTagName("table")[0];
this.table = typeof(table) == "String" ? document.getElementById("table") : table;
this.init();
}

AutoTableSize.prototype.init = function() {
autoTableSize = this;
var lastClickRowIndex;
var clickCount = 0;
for (var i = 0; i < this.table.rows.length; i++) {
var maxRowHeight = 0;
var tds = this.table.rows[i].cells;
if (tds.length == 0) continue;
for (var j = 0; j < tds.length; j++) {
maxRowHeight = maxRowHeight > tds[j].offsetHeight ? maxRowHeight : tds[j].offsetHeight;
var innerDiv = document.createElement("div");
innerDiv.style.height = Number(this.table.style.fontSize.substring(0, this.table.style.fontSize.length - 2)) + 1 + "px";
innerDiv.style.overflow = "hidden";
innerDiv.style.margin = "0";
innerDiv.style.padding = "0";
innerDiv.style.border = "0";
innerDiv.innerHTML = tds[j].innerHTML;

tds[j].innerHTML = "";
tds[j].appendChild(innerDiv);
}
this.table.rows[i].maxHeight = maxRowHeight;
this.table.rows[i].onmouseover = function(){this.style.backgroundColor = "#DAE9FE";}
this.table.rows[i].onmouseout = function() {this.style.backgroundColor = "#FFF";}
this.table.rows[i].onclick = function() {
if (this.rowIndex == lastClickRowIndex) {
if (clickCount % 2 == 0) {
autoTableSize.showTR(this.rowIndex);
} else {
autoTableSize.hideTR(this.rowIndex);
}
clickCount++;
return;
}
autoTableSize.hideTR(lastClickRowIndex);
autoTableSize.showTR(this.rowIndex);
lastClickRowIndex = this.rowIndex;
clickCount++;
}
}
}
AutoTableSize.prototype.hideTR = function(index) {
if (!Number(index)) return;
tds = this.table.rows[index].cells;
for (var i = 0; i < tds.length; i++) {
tds[i].firstChild.style.height = Number(this.table.style.fontSize.substring(0, this.table.style.fontSize.length - 2)) + 1 + "px";
}
}
AutoTableSize.prototype.showTR = function(index) {
if (!Number(index)) return;
tds = this.table.rows[index].cells;
for (var i = 0; i < tds.length; i++) {
tds[i].firstChild.style.height = this.table.rows[index].maxHeight - 2 * this.table.getAttribute("cellpadding");
}
}