自动扩展筛选范围 会自动将过滤器范围扩展到原始过滤器范围之下，直到下面全是空值。
自动扩展筛选范围 只能在普通的工作表过滤器中工作，在 table/pivotTable/tableSheet 过滤器中不起作用。
您可以使用 allowAutoExtendFilterRange 禁用/启用自动扩展过滤器范围，默认情况下为 false（禁用）。
当allowAutoExtendFilterRange为真时，用户可以通过rowFilter.extendedRange获得扩展过滤范围；
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"));
initSpread(spread);
};
function initSpread(spread) {
var spreadNS = GC.Spread.Sheets;
spread.suspendPaint();
_bindEvent(spread);
var sheet = spread.getSheet(0);
var headerStyle = new spreadNS.Style();
headerStyle.font = "bold 11pt Calibri"
sheet.setStyle(1,1,headerStyle);
sheet.setStyle(1,2,headerStyle);
sheet.setStyle(1,3,headerStyle);
sheet.setStyle(1,4,headerStyle);
sheet.setColumnWidth(1, 120);
sheet.setColumnWidth(2, 120);
sheet.setColumnWidth(3, 120);
sheet.setColumnWidth(4, 120);
sheet.getCell(1, 1).text("First Name");
sheet.getCell(1, 2).text("Last Name");
sheet.getCell(1, 3).text("Score");
sheet.getCell(1, 4).text("Position");
sheet.getCell(2, 1).text("Alexa");
sheet.getCell(2, 2).text("Wilder");
sheet.getCell(2, 3).text("90");
sheet.getCell(2, 4).text("Web Developer");
sheet.getCell(3, 1).text("Victor");
sheet.getCell(3, 2).text("Wooten");
sheet.getCell(3, 3).text("70");
sheet.getCell(3, 4).text(".NET Developer");
sheet.getCell(4, 1).text("Ifeoma");
sheet.getCell(4, 2).text("Mays");
sheet.getCell(4, 3).text("85");
sheet.getCell(4, 4).text("Sales Manager");
var basedFilterRange = new spreadNS.Range(2,1,2,4);
var rowFilter = new spreadNS.Filter.HideRowFilter(basedFilterRange);
sheet.rowFilter(rowFilter);
spread.resumePaint();
}
function _bindEvent (spread) {
_getElementById("allowAutoExtendFilterRange").addEventListener('change', function() {
spread.options.allowAutoExtendFilterRange = _getElementById("allowAutoExtendFilterRange").checked;
});
}
function _getElementById(id){
return document.getElementById(id);
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="spreadjs culture" content="zh-cn" />
<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-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>Change the state of allowAutoExtendFilterRange and open the filter dialog to see how the filter range
extend works.</p>
<div class="option-group">
<input type="checkbox" id="allowAutoExtendFilterRange" />
<label for="allowAutoExtendFilterRange">Allow Auto Extend Filter Range</label>
</div>
</div>
</div>
</body>
</html>
.sample {
position: relative;
height: 100%;
overflow: auto;
}
.sample::after {
display: block;
content: "";
clear: both;
}
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height: 100%;
overflow: hidden;
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;
}
.option-group {
margin-bottom: 6px;
}
label {
display: inline-block;
min-width: 90px;
margin-bottom: 6px;
}
select {
padding: 4px 6px;
}
p {
padding: 0 0 12px;
margin: 0;
}
.options-toggle {
display: none;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
