diff --git a/content/onedataset.html b/content/onedataset.html
index 9a66e515..3a9eb98e 100644
--- a/content/onedataset.html
+++ b/content/onedataset.html
@@ -19,12 +19,12 @@ draft: false
         window.dats=await loadAllData()
         window.data=new CombinedData()
         molecules=new Set(Object.values(window.dats).flat().map((d)=>d.molecule))
-        molecules.forEach(el=>{
+        for (const el of molecules) {
           op=document.createElement("option")
           op.value=el
           op.innerText=el
           document.getElementById("select_mol").appendChild(op)
-        })
+        }
       }
       function select_mol_onchange(event){
         update_mol(event.target.value)
@@ -39,20 +39,20 @@ draft: false
         update_ZPE(window.dats["ZPE"][event.target.value])
       }
       async function update_mol(molecule){
-        Object.keys(window.dats).forEach((key)=>{
+        for (const [key,dat] of Object.entries(window.dats)) {
           var s=document.getElementById(String.raw`select_${key}`)
           while (s.options[s.options.length-1].value!= "") {
             s.options.remove(s.options[s.options.length-1])
           }
-          window.dats[key].forEach(val=>{
+          dat.forEach((val,index)=>{
             if(val.molecule==molecule){
               var op=document.createElement("option")
-              op.value=window.dats[key].indexOf(val)
+              op.value=index
               op.innerText=val.method.toString()
               s.appendChild(op)
             }
           })
-        })
+        }
       }
       async function update_abs(abs){
         window.data.Abs=abs
@@ -91,7 +91,7 @@ draft: false
         }
         div=document.getElementById("meta_div")
         div.innerHTML=""
-        for (element of md) {
+        for (const element of md) {
           var node =null;
           switch (trueTypeOf(element)) {
             case "string":
@@ -123,19 +123,19 @@ draft: false
         }
         var tb=document.getElementById("ex_table_b");
         tb.innerHTML=''
-        window.data.excitations.forEach(el=> {
+        for (const el of window.data.excitations) {
           var row=document.createElement("tr")
           var rowd=[]
           rowd.push(String.raw`${LatexInline[0]} ${el.initial.toLaTeX()} \rightarrow ${el.final.toLaTeX()}${LatexInline[1]}`)
           var e=[el.Eabs,el.Efluo,el.EZPE,el.Eadia,el.Ezz]
           e.forEach((val)=>rowd.push(noNanPrecision(val,3)))
-          rowd.forEach((d)=>{
+          for(d of rowd) {
             td=document.createElement("td")
             td.innerText=d
             row.appendChild(td)
-          })
+          }
           tb.appendChild(row)
-        });
+        }
         await MathJax.typesetPromise();
         document.getElementById("ex_div").hidden=false
         var plotdat = [{
diff --git a/static/scripts/data.js b/static/scripts/data.js
index 3e5f34ed..5f1e0d65 100644
--- a/static/scripts/data.js
+++ b/static/scripts/data.js
@@ -1,200 +1,198 @@
 class code {
-  constructor(name,version){
-    this.name=name;
-    this.version=version;
+  constructor(name, version) {
+    this.name = name;
+    this.version = version;
   };
-  toString() { 
-    var str=this.name;
+  toString() {
+    var str = this.name;
     if (this.version) {
-      str=str+' ('+this.version+')';
+      str = str + ' (' + this.version + ')';
     }
     return str;
   }
   static fromString(str) {
-    var vals=str.split(",")
-    if(vals.length>=2){
-      return new code(vals[0],vals[1]);
+    var vals = str.split(",")
+    if (vals.length >= 2) {
+      return new code(vals[0], vals[1]);
     } else {
-      return new code(vals[0],null);
+      return new code(vals[0], null);
     }
   }
 }
 class method {
-  constructor(name,basis){
-    this.name=name;
-    this.basis=basis;
+  constructor(name, basis) {
+    this.name = name;
+    this.basis = basis;
   }
   static fromString(str) {
-    var vals=str.split(",")
-    if(vals.length==2){
-      return new method(vals[0],vals[1]);
+    var vals = str.split(",")
+    if (vals.length == 2) {
+      return new method(vals[0], vals[1]);
     }
-    else{
-      return new method(vals[0],null)
+    else {
+      return new method(vals[0], null)
     }
   }
-  toString() { 
-    var str=this.name;
+  toString() {
+    var str = this.name;
     if (this.name) {
-      str=str+'/'+this.basis;
+      str = str + '/' + this.basis;
     }
     return str;
   }
 }
 
-class state{
-  constructor(number,multiplicity,symetry){
-    this.number=number;
-    this.multiplicity=multiplicity;
-    this.symetry=symetry;
+class state {
+  constructor(number, multiplicity, symetry) {
+    this.number = number;
+    this.multiplicity = multiplicity;
+    this.symetry = symetry;
   };
-  toString() { 
-    var str=this.number+ ' ^'+this.multiplicity+this.symetry;
+  toString() {
+    var str = this.number + ' ^' + this.multiplicity + this.symetry;
     return str;
   };
   toLaTeX() {
-    var tex= String.raw`${this.number}\:\vphantom{\mathrm{${this.symetry.charAt(0)}}}^{${this.multiplicity}}\mathrm{${this.symetry}}`;
+    var tex = String.raw`${this.number}\:\vphantom{\mathrm{${this.symetry.charAt(0)}}}^{${this.multiplicity}}\mathrm{${this.symetry}}`;
     return tex;
   };
 }
-class doi{
-  constructor(doistring){
-    this.string=doistring
+class doi {
+  constructor(doistring) {
+    this.string = doistring
   };
-  toString() { 
+  toString() {
     return this.string;
   };
   get url() {
-    return 'https://doi.org/'+this.string;
+    return 'https://doi.org/' + this.string;
   };
 }
 
-class excitationBase{
-  constructor(initial,final){
-    this.initial=initial;
-    this.final=final
+class excitationBase {
+  constructor(initial, final) {
+    this.initial = initial;
+    this.final = final
   }
 }
-class excitationValue extends excitationBase{
-  constructor(initial,final,value){
-    super(initial,final)
-    this.value=value
+class excitationValue extends excitationBase {
+  constructor(initial, final, value) {
+    super(initial, final)
+    this.value = value
   }
 }
 
-class excitation extends excitationBase{
-  constructor(initial,final,Eabs,Efluo,EZPE){
-    super(initial,final)
-    this.Eabs=Eabs
-    this.Efluo=Efluo
-    this.EZPE=EZPE
+class excitation extends excitationBase {
+  constructor(initial, final, Eabs, Efluo, EZPE) {
+    super(initial, final)
+    this.Eabs = Eabs
+    this.Efluo = Efluo
+    this.EZPE = EZPE
   }
   get Eadia() {
-    return (this.Eabs+this.Efluo)/2
- }
+    return (this.Eabs + this.Efluo) / 2
+  }
   get Ezz() {
-     return this.Eadia-this.EZPE
+    return this.Eadia - this.EZPE
   }
   toString() {
-    return this.start+ ', ' + this.end +', '+ noNanPrecision(this.Eabs,3);
+    return this.start + ', ' + this.end + ', ' + noNanPrecision(this.Eabs, 3);
   }
 }
 
 class dataFileBase {
-  constructor(){
-    this.molecule=''
-    this.comment=null
-    this.code=null
-    this.method=null
-    this.excitations=[]
-    this.DOI=null
+  constructor() {
+    this.molecule = ''
+    this.comment = null
+    this.code = null
+    this.method = null
+    this.excitations = []
+    this.DOI = null
   }
   static async loadAsync(file) {
-   return this.loadString(await getTextFromFileAsync(getFullDataPath(file)));
+    return this.loadString(await getTextFromFileAsync(getFullDataPath(file)));
   }
-  static readmetaPair(key, value,dat){
-    switch(key) {
+  static readmetaPair(key, value, dat) {
+    switch (key) {
       case "molecule":
-        dat.molecule=value
+        dat.molecule = value
         break;
       case "comment":
-        dat.comment=value
+        dat.comment = value
         break;
       case "code":
-        dat.code=code.fromString(value)
+        dat.code = code.fromString(value)
         break;
       case "method":
-        dat.method=method.fromString(value)
-        break;     
+        dat.method = method.fromString(value)
+        break;
       case "doi":
-        dat.DOI=new doi(value);
+        dat.DOI = new doi(value);
         break;
       default:
     }
   }
   static loadString(text) {
     // for each line with metadata
-    var ismetaArea=true;
+    var ismetaArea = true;
     //metadata RegExp (start with #; maybe somme spaces; : ; maybe somme space; datas)
-    var meta=/^#\s*([A-Za-z_]+)\s*:\s*(.*)$/;
-    var classname=this.name
-    var dat=eval(String.raw`new ${this.name}()`)
-    function readmeta(line){
+    var meta = /^#\s*([A-Za-z_]+)\s*:\s*(.*)$/;
+    var classname = this.name
+    var dat = eval(String.raw`new ${this.name}()`)
+    function readmeta(line) {
       // get key value
-      var match=line.match(meta)
+      var match = line.match(meta)
       // normalize key to lower
-      var key=match[1].toLowerCase()
+      var key = match[1].toLowerCase()
       //if data has value
-      if(match.length==3 && match[2]) {
-        var val=match[2]
+      if (match.length == 3 && match[2]) {
+        var val = match[2]
         eval(String.raw`${classname}.readmetaPair(key,val,dat)`)
       }
     }
-    function readrow(line){
-      var vals=line.split(/\s+/);
-      while (vals.length<8){
+    function readrow(line) {
+      var vals = line.split(/\s+/);
+      while (vals.length < 8) {
         vals.push(null);
       }
-      
-      var start=new state(parseInt(vals[0],10),parseInt(vals[1],10),vals[2]);
-      var end=new state(parseInt(vals[3],10),vals[4],vals[5]);
-      var ex= new excitationValue(start,end,parseFloat(vals[6],10));
+
+      var start = new state(parseInt(vals[0], 10), parseInt(vals[1], 10), vals[2]);
+      var end = new state(parseInt(vals[3], 10), vals[4], vals[5]);
+      var ex = new excitationValue(start, end, parseFloat(vals[6], 10));
       dat.excitations.push(ex);
     };
 
-    text.split("\n").forEach(function(line) { 
+    for (var line of text.split("\n")) {
       //if it's not empty line
-      line=line.trim();
-      if (line){
+      line = line.trim();
+      if (line) {
         //if # may be metadata or comment
-        if (line.charAt(0)=="#") {
+        if (line.charAt(0) == "#") {
           //if it's metadata
-          if(ismetaArea && meta.test(line)) {
+          if (ismetaArea && meta.test(line)) {
             readmeta(line);
-          }				
+          }
         } else { //else its row
-          ismetaArea=false;
+          ismetaArea = false;
           readrow(line);
         }
       }
-    });
+    }
     return dat
   }
 }
 
 class oneStateDataFile extends dataFileBase {
-  constructor(){
+  constructor() {
     super()
-    this.geometry=null
+    this.geometry = null
   }
-  static readmetaPair(key,value,dat)
-  {
-    if(key=="geom")
-    {
-      dat.geometry=method.fromString(value)
+  static readmetaPair(key, value, dat) {
+    if (key == "geom") {
+      dat.geometry = method.fromString(value)
     }
-    else{
-      dataFileBase.readmetaPair(key,value,dat)
+    else {
+      dataFileBase.readmetaPair(key, value, dat)
     }
   }
 }
@@ -204,83 +202,83 @@ class AbsDataFile extends oneStateDataFile {
 class FluoDataFile extends oneStateDataFile {
 
 }
-class twoStateDataFileBase extends dataFileBase{
-  constructor(){
+class twoStateDataFileBase extends dataFileBase {
+  constructor() {
     super()
-    this.GS=null
-    this.ES=null
+    this.GS = null
+    this.ES = null
   }
-  static readmetaPair(key,value,dat){
-    switch(key) {
+  static readmetaPair(key, value, dat) {
+    switch (key) {
       case "gs":
-        dat.GS=method.fromString(value)
+        dat.GS = method.fromString(value)
         break;
       case "es":
-        dat.ES=method.fromString(value)
+        dat.ES = method.fromString(value)
         break;
-        default:
-          dataFileBase.readmetaPair(key,value,dat)
+      default:
+        dataFileBase.readmetaPair(key, value, dat)
     }
   }
 }
 class ZPEDataFile extends twoStateDataFileBase {
-  
+
 }
-class CombinedData{
-  constructor(){
-    this.Abs=null
-    this.Fluo=null
-    this.ZPE=null
+class CombinedData {
+  constructor() {
+    this.Abs = null
+    this.Fluo = null
+    this.ZPE = null
   }
   get excitations() {
-    var exs=[]
-    var dic=new Map()
-    if(this.Abs!=null){
-      this.Abs.excitations.forEach((el)=>{
-        var key=JSON.stringify([el.initial,el.final])
-        if(!dic.has(key)){
-          dic.set(key,{})
+    var exs = []
+    var dic = new Map()
+    if (this.Abs != null) {
+      for (const el of this.Abs.excitations) {
+        var key = JSON.stringify([el.initial, el.final])
+        if (!dic.has(key)) {
+          dic.set(key, {})
         }
-        dic.get(key)["abs"]=el.value
-    })
+        dic.get(key)["abs"] = el.value
+      }
+      if (this.Fluo != null) {
+        for (const el of this.Fluo.excitations) {
+          var key = JSON.stringify([el.initial, el.final])
+          if (!dic.has(key)) {
+            dic.set(key, {})
+          }
+          dic.get(key)["fluo"] = el.value
+        }
+      }
+      if (this.ZPE != null) {
+        for (const el of this.ZPE.excitations) {
+          var key = JSON.stringify([el.initial, el.final])
+          if (!dic.has(key)) {
+            dic.set(key, {})
+          }
+          dic.get(key)["ZPE"] = el.value
+        }
+      }
+      dic.forEach((value, key) => {
+        var eabs = NaN
+        var efluo = NaN
+        var eZPE = NaN
+        var mykey = JSON.parse(key)
+        for (var el of mykey) {
+          Reflect.setPrototypeOf(el, state.prototype)
+        }
+        if ("abs" in value) {
+          eabs = value["abs"]
+        }
+        if ("fluo" in value) {
+          efluo = value["fluo"]
+        }
+        if ("ZPE" in value) {
+          eZPE = value["ZPE"]
+        }
+        exs.push(new excitation(mykey[0], mykey[1], eabs, efluo, eZPE))
+      })
+      return exs
+    }
   }
-    if(this.Fluo!=null){
-      this.Fluo.excitations.forEach((el)=>{
-        var key=JSON.stringify([el.initial,el.final])
-        if(!dic.has(key)){
-          dic.set(key,{})
-        }
-        dic.get(key)["fluo"]=el.value
-      })
-    }
-    if(this.ZPE!=null){
-      this.ZPE.excitations.forEach((el)=>{
-        var key=JSON.stringify([el.initial,el.final])
-        if(!dic.has(key)){
-          dic.set(key,{})
-        }
-        dic.get(key)["ZPE"]=el.value
-      })
-    }
-    dic.forEach((value,key)=>{
-      var eabs=NaN
-      var efluo=NaN
-      var eZPE=NaN
-      var mykey=JSON.parse(key)
-      mykey.forEach(el=>{
-        Reflect.setPrototypeOf(el,state.prototype)
-      })
-      if("abs" in value){
-       eabs=value["abs"]
-      }
-      if("fluo" in value){
-        efluo=value["fluo"]
-      }
-      if("ZPE" in value){
-        eZPE=value["ZPE"]
-      }
-      exs.push(new excitation(mykey[0],mykey[1],eabs,efluo,eZPE))
-    })
-    return exs
-  };
 }
\ No newline at end of file