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From what I can tell when I dynamically make a new column without using a push it is done backwards in IE. Doing a sheet[r].push() would not work so I dont know how else to do this.

Going to illustrate this in a code flow. 

 //{" ":"545"} current object.
 sheet[r][colN[elmt][ceeLineData.ColLabel].toString()] = dat[count + c].data;
 //{" ":"545","20":"1"} current object.

So the line did nothing more then simply add a new column titled "20" with rowdata of "1" Something like this:

[" "]--["20"]//columns 0,1
["545"]["1"]//row 0

this is true for ff,safari,opera,chrome now for IE it did this

["20"]--[" "]
["1"]["545"]

why?

Here are the brake down values of the above for reference.

alert( r ) //0
alert( JSON.stringify( sheet[r] ) ); // {" ":"545"}
alert( c ) //1
alert( count + c ) //56
alert( dat[count + c].data ) //1
alert( elmt ) // 9 
alert( ceeLineData.ColLabel ) //BP In Hg
alert( colN[elmt][ceeLineData.ColLabel].toString() )//20
alert( JSON.stringify( sheet[r] ) ); // {" ":"545","20":"1"}//not IE
alert( JSON.stringify( sheet[r] ) ); // {"20":"1"," ":"545"}//IE
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1 回答 1

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当您使用像“”（空格）这样的属性名称时，您不会将元素附加到数组中。您只是向对象添加了一个命名属性。命名属性和数字索引的数组属性没有定义的顺序。实际上，看起来您甚至都没有数组；这些只是简单的对象，从它们用花括号记录的事实可以清楚地看出。

JavaScript Array 实例当然也是对象，但它们有特殊的行为。普通对象的属性没有定义的顺序，因此您不能期望系统（在记录对象时，或在for ... in循环中等）以任何特定顺序呈现它们。

于 2013-05-20T13:21:57.890 回答