test: history API code update

Added condition to only referesh history if the history length changes
at next history refresh time.
still need to confirm if it works as expected.

assets/scripts/dashboard.js

@@ -295,7 +295,7 @@ function ShowCoinHistory(getData) {
             ClearOnLogout(true, true);
         }
         if ( JSON.parse(CheckLoginData).status === 'unlocked' ) {
-            //console.log(getData.vals['coin']);
+            console.log(getData.vals['coin']);
             $.ajax({
                 type: 'POST',
                 data: JSON.stringify(getData),
@@ -326,6 +326,8 @@ function ShowCoinHistory(getData) {
                     
                     var show_coin_history = CoinHistoryData; //Enable to get history from each coins's wallet address.
                     //var show_coin_history = testhistory; //Enable to get history from just test variable.
+                    
+                    if ( sessionStorage.getItem('PrevHistoryLength_'+getData.vals['coin']) != CoinHistoryData.history.length ) {
                       $.each(show_coin_history.history.reverse(), function(coin_history_index){
                           //console.log(coin_history_index);
                           //console.log(show_coin_history.history[coin_history_index].details.vout);
@@ -346,7 +348,9 @@ function ShowCoinHistory(getData) {
                           wallettblContent += '</tr>';
                           $('table[data-currency="' + getData.vals['coin'] + '"][id="currency-tbl"] tbody').html(wallettblContent);
                           //$('#currency-tbl tbody').html(wallettblContent);
+                          sessionStorage.setItem('PrevHistoryLength_'+getData.vals['coin'], CoinHistoryData.history.length);
                       });
+                    }
                    
                     //console.log(show_coin_history.history.length);
                     $('span[data-currency="' + getData.vals['coin'] + '"][id="currency-nooftransactions"]').text(show_coin_history.history.length);