How to sort JS object array

I am trying to sort this JavaScript object array based on the Planned Start

[{"EPRID":"123","AssetName":"AS1","Identifier":"","ID":"C399","Category":"blank","This_ID":"0023-E","Approval status":"Need More Information","Status":"initial","Phase":"Implementation","Planned Start Date":"10/31/2017","Planned End Date":"22/11/2017","Description":"as1 testing","Requestor":"bob","Comments":"test comment","Comment_Updated_By":"jim","Comment_Updated_Timestamp":"09/14/2017 08:00:55"},
{"EPRID":"321","AssetName":"AS3","Identifier":"C19","ID":null,"Category":"Normal Changes","This_ID":"0013-E","Approval status":null,"Status":"initial","Phase":"Implementation","Planned Start Date":"11/21/2016","Planned End Date":"12/12/2016","Description":"as3 testing","Requestor":"joe","Comments":null,"Comment_Updated_By":null,"Comment_Updated_Timestamp":null},
{"EPRID":"213","AssetName":"AS5","Identifier":"C113","ID":null,"Category":"Normal Changes","This_ID":"0143-E","Approval status":null,"Status":"initial","Phase":"Authorization","Planned Start Date":"11/05/2017","Planned End Date":"11/05/2017","Description":"as5 testing","Requestor":"john","Comments":null,"Comment_Updated_By":null,"Comment_Updated_Timestamp":null}]  

I have tried the following:

rowObj.sort(function(a, b) {
        return a["Planned Start Date"] < b["Planned Start Date"];
});

Which I found from 979256

I have also tried the localeCompare() but still can seem to get my desired result.

Try this:

rowObj.sort(function (a, b) {

   let aStartDate=new Date(a["Planned Start Date"]);
   let bStartDate=new Date(b["Planned Start Date"]);

   if (aStartDate.getTime() > bStartDate.getTime()) {
       return 1;
     }

   if (aStartDate.getTime() < bStartDate.getTime()) {
       return -1;
     }

    return 0;
});

console.log(rowObj);