项目切片器是一个独立的切片器控件，并不依赖Spread Sheets，你可以在页面的任何地方添加项目切片器。
项目切片器需要与切片器数据模块相配合(包括通用切片器数据，表格切片器数据或者其他基于通用切片器数据实现的切片器数据)。如果项目切片器与表格切片器配合使用，当项目切片器发生筛选动作，表格上的数据也会随之同步。
你可以通过以下步骤构建自己的项目切片器：
构建数据源和通用切片器数据
获取列数据并构建呈现界面。
获取筛选结果并更新呈现界面。
构建项目切片器，并将通用切片器数据附加在切片器上，并将其置于页面的DOM树结构中。
window.onload = function () {
var columnNames = ["Name", "Class", "Gender", "Math", "English", "Total Score"];
var data = [["Student1", 1, "female", "69", "66", "135"],
["Student2", 1, "female", "99", "85", "184"],
["Student3", 1, "male", "78", "77", "155"],
["Student4", 1, "male", "54", "80", "134"],
["Student7", 2, "male", "87", "98", "185"],
["Student8", 2, "male", "78", "85", "163"],
["Student9", 2, "female", "100", "90", "190"],
["Student10", 2, "female", "68", "54", "122"],
["Student11", 2, "female", "97", "100", "197"],
["Student12", 2, "female", "81", "90", "171"],
["Student15", 2, "female", "90", "68", "158"],
["Student16", 3, "male", "86", "70", "156"],
["Student17", 3, "male", "88", "89", "177"],
["Student18", 3, "male", "54", "80", "134"],
["Student19", 3, "male", "81", "75", "156"],
["Student23", 3, "female", "78", "98", "176"],
["Student24", 3, "female", "90", "98", "188"],
["Student25", 3, "male", "60", "30", "90"],
["Student26", 3, "female", "0", "0", "0"],
["Student27", 3, "female", "100", "100", "200"],
["Student28", 3, "male", "89", "78", "167"]
];
var slicerData = new GC.Spread.Slicers.GeneralSlicerData(data, columnNames);
var onFiltered = slicerData.onFiltered;
slicerData.onFiltered = function () {
onFiltered.call(slicerData);
refreshList(slicerData);
}
var nameSlicer = new GC.Spread.Sheets.Slicers.ItemSlicer("Name", slicerData, "Name");
nameSlicer.height(200);
nameSlicer.width(180)
nameSlicer.columnCount(2);
document.getElementById('nameSlicerHost').appendChild(nameSlicer.getDOMElement());
var classSlicer = new GC.Spread.Sheets.Slicers.ItemSlicer("Class", slicerData, "Class");
classSlicer.height(200);
classSlicer.width(180)
document.getElementById('classSlicerHost').appendChild(classSlicer.getDOMElement());
initList(data, columnNames);
};
function initList(data, columnNames) {
var tableStr = '<tr>';
for (var i = 0; i < columnNames.length; i++) {
tableStr += "<th>" + columnNames[i] + "</th>";
}
tableStr += '</tr>';
for (var i = 0; i < data.length; i++) {
tableStr += "<tr>";
for (var j = 0; j < data[i].length; j++) {
tableStr += "<td>" + data[i][j] + "</td>";
}
tableStr += "</tr>";
}
var table = document.createElement('table');
table.innerHTML = tableStr;
table.border = 1;
table.cellPadding = 0;
table.cellSpacing = 0;
document.getElementById('ss').appendChild(table);
}
function refreshList(slicerData) {
var filteredRowIndexs = slicerData.getFilteredRowIndexes();
var trs = document.getElementsByTagName('tr');
for (var i = 0; i < slicerData.data.length; i++) {
if (filteredRowIndexs.indexOf(i) !== -1) {
trs[i + 1].style.display = '';
} else {
trs[i + 1].style.display = 'none';
}
}
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta name="spreadjs culture" content="zh-cn" />
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css"
href="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-shapes/dist/gc.spread.sheets.shapes.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-slicers/dist/gc.spread.sheets.slicers.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-resources-zh/dist/gc.spread.sheets.resources.zh.min.js"
type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-spreadsheets"></div>
<div class="options-container">
<p class="desc">Click on the items in this slicer to filter by that class. You can Ctrl+Left Click to select
multiple items.</p>
<div id="nameSlicerHost" class="slicer"></div>
<div id="classSlicerHost" class="slicer"></div>
</div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height: 100%;
overflow: auto;
float: left;
}
.options-container {
float: right;
width: 280px;
padding: 12px;
height: 100%;
box-sizing: border-box;
background: #fbfbfb;
overflow: auto;
}
.option-row {
font-size: 14px;
padding: 5px;
margin-top: 10px;
}
.slicer {
height: 220px;
position: relative;
}
table th,
table td {
padding: 4px 8px;
}
.desc{
padding:2px 10px;
background-color:#F4F8EB;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
