有时候我们需要知道在使用Handsontable时筛选掉了哪些数据，并对这些数据进行处理，可以使用afterFilter事件来进行相关操作。
Handsontable筛选掉的数据没有真的被删除，而是被隐藏了起来，我们需要知道这些被隐藏起来的行号，然后获得相关数据。
原始数据：
相关代码如下：
<!DOCTYPE html>
<html>
<head>
<title>handsontable demo</title>
<meta charset="utf-8">
<link rel="stylesheet" href="handsontable/htstyle.css">
<link rel="stylesheet" href="handsontable/htstyle-custom.css">
<script src="handsontable/jquery-1.12.1.js"></script>
<script src="handsontable/handsontable.min.js"></script>
</head>
<body>
<div id="example"></div> <script>
var data = [
{ riqi: '2017-01', address: '北京', goods: '冰箱', price: '3399', sales: 530, del: '' },
{ riqi: '2017-01', address: '天津', goods: '空调', price: '4299', sales: 522, del: '' },
{ riqi: '2017-01', address: '上海', goods: '洗衣机', price: '1299', sales: 544, del: '' },
{ riqi: '2017-01', address: '广州', goods: '彩电', price: '4599', sales: 562, del: '' },
{ riqi: '2017-01', address: '深圳', goods: '热水器', price: '1099', sales: 430, del: '' },
{ riqi: '2017-02', address: '重庆', goods: '笔记本电脑', price: '4999', sales: 666, del: '' },
{ riqi: '2017-02', address: '厦门', goods: '油烟机', price: '2899', sales: 438, del: '' },
{ riqi: '2017-02', address: '青岛', goods: '饮水机', price: '899', sales: 620, del: '' },
{ riqi: '2017-02', address: '大连', goods: '手机', price: '1999', sales: 500, del: '' }
]; function negativeValueRenderer(instance, td, row, col, prop, value, cellProperties) {
Handsontable.renderers.TextRenderer.apply(this, arguments);
if (prop == 'address') {
td.style.color = '#32CD32';
}
else if (prop == 'price') {
//格式化价格数据
td.innerText = value != null ? numbro(value).format('0.00') : "";
}
else if (prop == 'sales') {
//右对齐
td.style.textAlign = 'right';
td.innerText = value != null ? numbro(value).format('0,0.00') : "";
}
else if (prop == 'del') {
//添加自定义的图片，并给图片的chick添加事件
var escaped = Handsontable.helper.stringify(value),
imgdel; imgdel = document.createElement('IMG');
imgdel.src = "handsontable/remove.png";
imgdel.width = 20;
imgdel.name = escaped;
imgdel.style = 'cursor:pointer;';//鼠标移上去变手型
Handsontable.dom.addEvent(imgdel, 'click', function (event) {
hot.alter("remove_row", row);//删除当前行
}); Handsontable.dom.empty(td);
td.appendChild(imgdel);
td.style.textAlign = 'center';
return td;
}
}
Handsontable.renderers.registerRenderer('negativeValueRenderer', negativeValueRenderer); var hot = new Handsontable(document.getElementById('example'), {
data: data,
colHeaders: ['操作', '日期', '地点', '商品', '单价', '销量'], // 使用自定义列头
rowHeaders: true,
colWidths: 150, // 设置所有列宽为150像素
filters: true,
columnSorting: true,
sortIndicator: true,
autoColumnSize: true,
manualColumnResize: true,
undo: true,
redo: true,
wordWrap: true,
copyable: true,
mergeCells: false,
manualRowResize: true,
manualRowMove: true,
manualColumnMove: false,
renderAllRows: true,
allowInsertRow: true,
allowInsertColumn: false,
fixedColumnsLeft: 1,
columns: [{
data: 'del',
type: 'text'
}, {
data: 'riqi',
type: 'date',
dateFormat: 'YYYY-MM-DD'
}, {
data: 'address',
type: 'text'
}, {
data: 'goods',
type: 'text'
}, {
data: 'price',
type: 'numeric'
}, {
data: 'sales',
type: 'numeric'
}],
contextMenu: ['row_above', 'row_below', '---------', 'remove_row', '---------', 'undo', 'redo', '---------', 'make_read_only', '---------', 'alignment'],
dropdownMenu: ['filter_by_condition', 'filter_by_value', 'filter_action_bar'],
cells: function (row, col, prop) {
var cellProperties = {};
cellProperties.renderer = "negativeValueRenderer";
return cellProperties;
},
});
//添加筛选成功后的触发事件
hot.addHook('afterFilter', function () {
var plugin = hot.getPlugin('trimRows').trimmedRows;//获取被筛选掉的行号
if (plugin.length <= 0) {
return;
}
console.log(plugin); var DataArray = new Array(); for (var i = 0; i < plugin.length; i++) {
//通过行号获取数据
DataArray.push(hot.getSourceDataAtRow(plugin[i]));
} console.log(DataArray);
});
</script>
</body>
</html>
在操作中，我筛选掉了地点为北京的那一行，可以发现浏览器日志如下：
By QJL