类似下面已实现的功能:
把左右两个表格的数据转成js数组,然后一行行比较两个数组的差异。
```javascript
var a = [
['序号', 'A', 'B', 'C'],
['1.00', 'a1', 'b1', 'c1'],
['2.00', 'a2', 'b2', 'c2'],
['3.00', 'a3', 'b3', 'c3']
];
var b = [
['序号', 'A', 'B', 'C'],
['1.00', 'a1', 'b1', 'c1'],
['0', 'a0', 'b0', 'c0'],
['2.00', 'a2', 'b2', 'c2'],
['3.00', 'a3', 'b3', 'c3']
];
// 差异比较后
var m = [
["序号", "A", "B", "C"],
["1", "a1", "b1", "c1"],
["<span class=\"diff-del\">2</span><span class=\"diff-add\">0</span>", "a<span class=\"diffed diff-add\">0</span><span class=\"diffed diff-del\">2</span>", "b<span class=\"diffed diff-add\">0</span><span class=\"diffed diff-del\">2</span>", "c<span class=\"diffed diff-add\">0</span><span class=\"diffed diff-del\">2</span>"],
["2", "a2", "b2", "c2"],
["3", "a3", "b3", "c3"]
];
网页效果: