问JavaScript if/else语句返回一个记录的答案

EN

var random_1 = Math.floor((Math.random() * 1000) + 200);
var random_2 = Math.floor((Math.random() * 1000) + 200);

function result(){

	if (random_1 > random_2) {
		$("#result").html("A won");
		return;
	}

	else {
		$("#result").html("b won")
	}
}

$("#start").click(function(){
	$("#car_1").animate({"left":screen.width - 150},random_1,result());
	$("#car_2").animate({"left":screen.width - 150},random_2);
});

$("#reset").click(function(){
	$("#result").html("");
	$("#car_1").removeAttr("style");
	$("#car_2").removeAttr("style");
});

img{
	width: 150px;
	display: block;
}

.track{
	background: url("https://i.imgur.com/BKL70mT.png") center;
	height: : 100px !important;
	margin-top: 2em;
}

#car_1, #car_2{
	position: relative;
}

#result{
	text-align: center;
	font-size: 3em;
	font-family: arial;
	text-transform: uppercase;
	font-weight: bold;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="track">
  <img src="https://i.imgur.com/ZxAEmIn.png" id="car_1">
  <img src="https://i.imgur.com/nNIg2m4.png" id="car_2">
</div>
<div class="buttons">
  <button id="start">Start</button>
  <button id="reset">Reset</button>
</div>

<p id="result"></p>