A l'aide ;) Automatiser l'enregistrement de chaque calque en jpg en gardant le nom de chaque calque

Did you give the Script a try? 

If it should not work out please provide the layered file for testing (a lores version with blurred out image-content would suffice). 

You can give this a try: 

// save jpg for each layer in group of certain name;
// 2024, use it at your own risk;
if (app.documents.length > 0) {
var myDocument = app.activeDocument;
try {
var theName = myDocument.name.match(/(.*)\.[^\.]+$/)[1];
var thePath = myDocument.path;
}
catch (e) {
var theName = myDocument.name;
var thePath = "~/Desktop"
};
// jpg options;
var jpgopts = new JPEGSaveOptions();
jpgopts.embedProfile = true;
jpgopts.formatOptions = FormatOptions.STANDARDBASELINE;
jpgopts.matte = MatteType.NONE;
jpgopts.quality = 10;
// collect layers in group of name;
var theLayers = collectLayersInGroupOfName ("JOUERURS");
// hide layers;
for (var m = 0; m < theLayers.length; m++) {
showHideLayer (theLayers[m][2], "hide")
};
// show one layer and save jpg;
for (var n = 0; n< theLayers.length; n++) {
showHideLayer (theLayers[n][2], "show");
myDocument.saveAs((new File(thePath+"/"+"_"+theName+"_"+theLayers[n][0]+".jpg")),jpgopts,true);
};
};
////// collect layers in group of name //////
function collectLayersInGroupOfName (theName) {
var theGroup = collectLayersOfName (theName, true);
if (theGroup.length == 1) {
// get number of layers;
var ref = new ActionReference();
ref.putProperty(stringIDToTypeID('property'), stringIDToTypeID('numberOfLayers'));
ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var applicationDesc = executeActionGet(ref);
var theNumber = applicationDesc.getInteger(stringIDToTypeID("numberOfLayers"));
// process the layers;
var theLayers = new Array;
for (var m = 0; m <= theNumber; m++) {
try {
var ref = new ActionReference();
ref.putIndex( charIDToTypeID( "Lyr " ), m);
var layerDesc = executeActionGet(ref);
var layerSet = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("layerSection")));
var isBackground = layerDesc.getBoolean(stringIDToTypeID("background"));
// if group collect values;
if (layerSet != "layerSectionEnd" && layerSet != "layerSectionStart" && isBackground != true) {
var theName = layerDesc.getString(stringIDToTypeID('name'));
var theID = layerDesc.getInteger(stringIDToTypeID('layerID'));
var theIndex = layerDesc.getInteger(stringIDToTypeID('itemIndex'));
var theParentId = layerDesc.getInteger(stringIDToTypeID('parentLayerID'));
if (theParentId == theGroup[0][2]) {theLayers.push([theName, theIndex, theID])}
};
}
catch (e) {};
};
return theLayers
} else {alert ("no such group or more than one group")}
};
////// based on code by mike hale, via paul riggott //////
function selectLayerByID(id,add){
try {
add = undefined ? add = false:add 
var ref = new ActionReference();
ref.putIdentifier(charIDToTypeID("Lyr "), id);
var desc = new ActionDescriptor();
desc.putReference(charIDToTypeID("null"), ref );
if(add) desc.putEnumerated( stringIDToTypeID( "selectionModifier" ), stringIDToTypeID( "selectionModifierType" ), stringIDToTypeID( "addToSelection" ) ); 
desc.putBoolean( charIDToTypeID( "MkVs" ), false ); 
try{
executeAction(charIDToTypeID("slct"), desc, DialogModes.NO );
}catch(e){
alert(e.message); 
}
} catch (e) {}
};
////// collect layers //////
function collectLayersOfName (theString, isGroup) {
// get number of layers;
var ref = new ActionReference();
ref.putProperty(stringIDToTypeID('property'), stringIDToTypeID('numberOfLayers'));
ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var applicationDesc = executeActionGet(ref);
var theNumber = applicationDesc.getInteger(stringIDToTypeID("numberOfLayers"));
// process the layers;
var theLayers = new Array;
for (var m = 0; m <= theNumber; m++) {
try {
var ref = new ActionReference();
ref.putIndex( charIDToTypeID( "Lyr " ), m);
var layerDesc = executeActionGet(ref);
var layerSet = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("layerSection")));
var isBackground = layerDesc.getBoolean(stringIDToTypeID("background"));
// if group collect values;
if (layerSet != "layerSectionEnd" /*&& layerSet != "layerSectionStart" && isBackground != true*/) {
var theName = layerDesc.getString(stringIDToTypeID('name'));
var theID = layerDesc.getInteger(stringIDToTypeID('layerID'));
var theIndex = layerDesc.getInteger(stringIDToTypeID('itemIndex'));
var theColor = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("color")));
if (layerSet == "layerSectionStart" && isGroup == true) {
if (theName == theString) {theLayers.push([theName, theIndex, theID, theColor])}
};
if (layerSet != "layerSectionStart" && isGroup == false) {
if (theName == theString) {theLayers.push([theName, theIndex, theID, theColor])}
};
};
}
catch (e) {};
};
return theLayers
};
////// show or hide layer //////
function showHideLayer (theID, showOrHide) {
var idhide = stringIDToTypeID( showOrHide );
var desc22 = new ActionDescriptor();
var list2 = new ActionList();
var ref8 = new ActionReference();
ref8.putIdentifier( stringIDToTypeID( "layer" ), theID );
list2.putReference( ref8 );
desc22.putList( stringIDToTypeID( "null" ), list2 );
executeAction( idhide, desc22, DialogModes.NO );
};

Could you please post screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible to clarify the Layer structure?