Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

var echoSuccess = function(data){  /* this never gets called */ }
var echoFailure = function(error){ /* this never gets called */ }
failingCondition = true;
$.ajax( 
    { method:"post", 
      url:'/echo/json',
      data: {foo:'bar'}, 
      beforeSend: function(jqXHR){
          if(failingCondition){ jqXHR.abort() }
          return true
      }
    }
).then( echoSuccess, echoFailure )

// Uncaught TypeError: Object false has no method 'then'

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