How to adjust google sheet view depending on variable? - google-apps-script

Question

I have a spreadsheet with the following script that adjusts the view rows according to a variable:
function ConditionalHideRow() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("Form responses 1");
var maxrows = sheet.getMaxRows()
for (var i = 0; i < maxrows; ++i) {
if (sheet.getRange(maxrows-i,4).getValue() == "var1" ) {
sheet.hideRows(maxrows-i,1)
}
else
{
sheet.showRows(maxrows-i,1)
}
}
}
I want to pass a variable in the page that adjusts the view:
for example
if I pass var1 in the URL for example, the rows containing var1 are
shown, all the others are not
if I pass var2 in the URL for example,
the rows containing var2 are shown, all the others are not
etc

Answer 1

I have tried function doGet(e) var viewmode = e.parameter.view but doesn't seem to work when I am passing ....?view = "a"
To pass "a" to the doGet() in the URL query it like this ...?view=a; no need in the apostrophes.
Sample
function doGet(e){
var parameter = e.parameter;
if(parameter.view){ //check off the view type was passed
ConditionalHideRow(parater.view);
};
}
function ConditionalHideRow(condition){
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("Form responses 1");
var maxrows = sheet.getDataRange().getHeight();
for (var i = 0; i < maxrows; ++i) {
if (sheet.getRange(maxrows-i,4).getValue() == condition ) {
sheet.hideRows(maxrows-i,1);
}
else
{
sheet.showRows(maxrows-i,1);
};
}
}
This is off topic, but getDataRange().getHeight() i my experience is better to use, since getMaxRows() will return you a total number of rows, even if they are empty.
By default there is a 1000 empty rows, and even though you don't have any data there, you will still loop through it. getDataRange().getHeight() will give you a number of the last row where any piece of data appears.
Also, I am just curious, why are you looping backwards through the rows?