自定义视图支持列公式，其中包括对CalcEngine函数的支持。其他列可以使用"=[@column1]"这样的结构化引用来引用。
表中的计算列定义如下：
自定义视图也支持计算列，并且可以引用表中的数据列和计算列。
这是示例代码
计算列可以通过使用结构化引用（如 "=[@column1]"）来引用其他列。
引用是由至少一个行参考或列参考组成。
行引用
引用
描述
示例
Current Row
引用当前行
[@column1] column1的当前行的数据
Relative Row
引用相对行
[@+1column1] 返回下一行中column1的值 [@-1column1] 返回前一行中column1的值
Absolute Row
通过行号或 "最后"/"奇数"/"偶数 "引用绝对位置的行。
[#1[column1]] 返回column1中第一行值 [#last[column1]] 返回column1列中最后一行的值
Absolute Row by ID
通过主键引用该行
[$1234[column1]] 返回主键为 "1234 "的数据的column1值
Row Range
通过from和to引用行的范围
[@:#last[column1]] 返回从当前行到最后行的column1数值。
Several Rows
用逗号引用若干行
[#1,@-1:@+1,#last[column1]] 返回第一行、前一行到下一行以及最后一行的column1值。
列引用
引用
示例
Regular Field
[@column1]
Attribute of object field
[@column1.abc] 获取当前行字段column1中的 "abc "的属性值
Item of array field
[@column1.1] 获取字段column1当前行中的第一个值
Special Field
[@[column 1].[a aa]] 用方括号表示某一个领域
Whole Column
[column1] 获得column1中的所有数据
/*REPLACE_MARKER*/
/*DO NOT DELETE THESE COMMENTS*/
window.onload = function() {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 });
initSpread(spread);
};
function initSpread(spread) {
spread.suspendPaint();
spread.options.autoFitType = GC.Spread.Sheets.AutoFitType.cellWithHeader;
//init a data manager
var baseApiUrl = getBaseApiUrl();
var dataManager = spread.dataManager();
//add product table
var productTable = dataManager.addTable("productTable", {
remote: {
read: {
url: baseApiUrl + "/Product"
}
},
schema: {
columns: {
TotalUnits: {
dataType: "formula",
value: "[@UnitsInStock] + [@UnitsOnOrder]"
},
StockValue: {
dataType: "formula",
value: "[@UnitPrice] * ([@TotalUnits])"
}
}
}
});
//init a table sheet
var sheet = spread.addSheetTab(0, "TableSheet1", GC.Spread.Sheets.SheetType.tableSheet);
sheet.options.allowAddNew = false; //hide new row
sheet.setDefaultRowHeight(40, GC.Spread.Sheets.SheetArea.colHeader);
//bind a view to the table sheet
var myView = productTable.addView("myView", [
{ value: "Id", caption: "ID", width: 50 },
{ value: "ProductName", caption: "Name", width: 170 },
{ value: "UnitPrice", caption: "Unit Price", style: {formatter: "$#,##0.00"}, width: 120 },
{ value: "UnitsInStock", caption: "Units In Stock", width: 120 },
{ value: "TotalUnits", caption: "Total Units", width: 120 },
{ value: "StockValue", caption: "Stock Value", style: {formatter: "$#,##0.00"}, width: 120 },
{ value: "=SUM([#1:@[UnitPrice]]*([#1:@[UnitsInStock]]+[#1:@[UnitsOnOrder]])", caption: "Running SUM", style: {formatter: "$#,##0.00"}, width: 150 },
{ value: "=[@StockValue]/SUM([UnitPrice] * ([UnitsInStock] + [UnitsOnOrder]))",
caption: "Stock Value Ratio", style: {formatter: "0.00%"}, width: 160 }
]);
myView.fetch().then(function() {
sheet.setDataView(myView);
});
spread.resumePaint();
}
function getBaseApiUrl() {
return window.location.href.match(/http.+spreadjs\/SpreadJSTutorial\//)[0] + 'server/api';
}
<!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">
<!-- Promise Polyfill for IE, https://www.npmjs.com/package/promise-polyfill -->
<script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"></script>
<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-tablesheet/dist/gc.spread.sheets.tablesheet.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 id="optionContainer" class="optionContainer">
</div>
</div>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
.sample-spreadsheets {
width: 100%;
height: 100%;
overflow: hidden;
float: left;
}
