Question

我正在使用JavaScript创建电子表格，无法弄清楚如何评估=SUM字段。我的代码将生成一个数组ex (=SUM,A1,B1)，但我很遗憾如何更改A1和B1的属性以获取其相关字段的值。

function saveCell()
{
// get the text the user just typed into the text box
var cellText = document.getElementById("txtCell").value;

var tokenArray = getFormula(cellText);

// if null... this isn't a formula
if (tokenArray != null)
{
    alert("This is a formula to sum from " + tokenArray[1] + " to " + tokenArray[2]);

}
else
    currentRef.innerHTML = cellText;

    ssArray[currentRow - 1][currentCol - 1] = cellText;
}//end saveCell()


// determines if user entered a formula such as =SUM(A1:B1)
// returns an array with cell coordinates

function getFormula(tbValue)
{

// this is a regular expression pattern which is intended to
// split the string (formula) on any of ":" "(" or ")"
var pattern = /[:|\(|\)]/;

// do the split ... ar is an array
var ar = tbValue.split(pattern);

// convert =sum to upper case
var sum = ar[0].toUpperCase();
var attOne = ar[1];
var attTwo = ar[2];

if (ar.length < 3)
    return null;
else if (sum != "=SUM")
    return alert("The function '"+sum+"' is not supported...");
else
{
    //return an array of strings
    return ar;
    }
}//end getFormula()

Answer 1

嗯，如果我理解得好，A1和B1应该是de＆＃34; id＆＃34;存储值的元素中的元素，因此您应该进入这些元素并获取值。

在这种情况下，您可以使用document.getelementbyid(attOne).value获取A1字段内的值;

虽然我的问题有点遗失，但您可能应该发布电子表格的结构。

如何在JavaScript SpreadSheet中初始化= SUM字段

1 个答案: