Sort an array except one element in JavaScript

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Category:Languages

I have an array and I am sorting it but I need to sort everything except one element of my array.

My array is:

var Comparison = [     {key: "None", value: "None"},     {key:"Geographical Area", value:"Geographical_Area"},     {key:"Forests", value:"Forests"},     {key:"Barren Unculturable Land", value:"Barren_Unculturable_Land"},     {key:"Land put to Non agricultural use", value:"Land_put_to_Non_agricultural_use"},     {key:"Land Area", value:"Land_Area"},     {key:"Water Area", value:"Water_Area"},     {key:"Culturable Waste", value:"Culturable_Waste"},     {key:"Permanent Pastures", value:"Permanent_Pastures"},     {key:"Land under Tree Crops", value:"Land_under_Tree_Crops"},     {key:"Fallow Land excl Current Fallow", value:"Fallow_Land_excl_Current_Fallow"},     {key:"Current Fallow", value:"Current_Fallow"},     {key:"Total Unculturable Land", value:"Total_Unculturable_Land"},     {key:"Net Sown Area", value:"Net_Sown_Area"},     {key:"Gross Sown Area", value:"Gross_Sown_Area"},     {key:"Cropping Intensity", value:"Cropping_Intensity"} ]; 

I am sorting this array using this code:

var Comparison_sort = this.Comparison.sort(function (a, b) {   if (a.key < b.key)       return -1;   if (a.key > b.key)       return 1;   return 0; }); 

This is sorting my array perfectly, but I want one of my elements to be on top, meaning my element None should be on top and sort all other elements.

For example, I am getting this result:

   {key: "Barren Unculturable Land", value: "Barren_Unculturable_Land"}    {key: "Cropping Intensity", value: "Cropping_Intensity"}    {key: "Culturable Waste", value: "Culturable_Waste"}     ....    {key: "None", value: "None"} 

But I want a result like this:

   {key: "None", value: "None"}    {key: "Barren Unculturable Land", value: "Barren_Unculturable_Land"}    {key: "Cropping Intensity", value: "Cropping_Intensity"}    {key: "Culturable Waste", value: "Culturable_Waste"}     .... 

I saw an answer, Sort array in TypeScript, but I was unable to use this answer to my problem.

 


var Comparison_sort = this.Comparison.sort(function (a, b) {   if(a.key == b.key) return 0;   if (a.key == 'None') return -1;   if (b.key == 'None') return 1;    if (a.key < b.key)       return -1;   if (a.key > b.key)       return 1;   return 0; }); 

tells "do a regular sort, except if the key is none which means it must go first."

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