如何删除3d阵列';在JavaScript中为空值的行
我在JS数据系列中有一个3d数组,如下所示如何删除3d阵列';在JavaScript中为空值的行,javascript,Javascript,我在JS数据系列中有一个3d数组,如下所示 DataSeries[0]=Sun Jun 1 00:00:00 EDT 2014,1664.73,Tue Jul 1 00:00:00 EDT 2014,1683.06,Fri Aug 1 00:00:00 EDT 2014,1708.76 DataSeries[1]=Fri Jun 1 00:00:00 EDT 2012,,Sun Jul 1 00:00:00 EDT 2012,,Wed Aug 1 00:00:00 EDT 2012,, 我想
DataSeries[0]=Sun Jun 1 00:00:00 EDT 2014,1664.73,Tue Jul 1 00:00:00 EDT 2014,1683.06,Fri Aug 1 00:00:00 EDT 2014,1708.76
DataSeries[1]=Fri Jun 1 00:00:00 EDT 2012,,Sun Jul 1 00:00:00 EDT 2012,,Wed Aug 1 00:00:00 EDT 2012,,
我想做的是如果DataSeries[I][j][1]==null
,删除整行DataSeries[I]
。
这是我的密码
function checkNullLines(DataSeries) {
console.log("before" + DataSeries);
for ( var i = 0; i < DataSeries.length; i++) {
for ( var j = 0; j < DataSeries[i].length; j++) {
if (DataSeries[i][j][1] == null) {
DataSeries[i][j].splice(0, 2);
}
}
}
console.log("after" + DataSeries +" "+ DataSeries.length);
你能帮我找出错误在哪里吗?谢谢 您正在迭代数组并修改它。这需要更多的关注。以下是一个如何实现这一目标的示例:
var i, j, toDelete;
i = 0;
while(i < DataSeries.length)
{
toDelete = false;
for (j = 0; j < DataSeries[i].length; j++)
{
if(DataSeries[i][j][1] === null)
{
toDelete = true;
break;
}
}
if(toDelete)
{
DataSeries.splice(i, 1);
} else {
i++;
}
}
vari,j,toDelete;
i=0;
while(i
我已经更正了以前的答案,因为您想从DataSeries
中删除整行I
,您需要在该集合上拼接。
var i, j, toDelete;
i = 0;
while(i < DataSeries.length)
{
toDelete = false;
for (j = 0; j < DataSeries[i].length; j++)
{
if(DataSeries[i][j][1] === null)
{
toDelete = true;
break;
}
}
if(toDelete)
{
DataSeries.splice(i, 1);
} else {
i++;
}
}