find first occurrence of class in div

I have the below html structure, i want to find the inner html of first div with class as "popcontent" using jQuery

<div>
<div class="popContent">1</div>
<div class="popContent">2</div>
</div>

You will kick yourself..... :)

$(".popContent:first").html()

first occurrence of class in div

$('.popContent').eq(0).html('value to set');

Second occurrence of class in div

$('.popContent').eq(1).html('value to set');

you can use :first selector in this case

$('.popContent:first').text();

DEMO

$("div.popContent:first").html()

should give you the first div's content ("1" in this case)

You could use document.querySelector()

> Returns the first element within the document (using depth-first > pre-order traversal of the document's nodes|by first element in > document markup and iterating through sequential nodes by order of > amount of child nodes) that matches the specified group of selectors.

Since it is only looking for first occurence, it has better performance than jQuery

var count = 1000;
var element = $("<span>").addClass("testCase").text("Test");
var container = $(".container");
var test = null;
for(var i = 0; i < count; i++) {
	container.append(element.clone(true));
}

console.time('get(0)');
test = $(".testCase").eq(0);
console.timeEnd('get(0)');
console.log(test.length);

console.time('.testCase:first');
test = $(".testCase:first");
console.timeEnd('.testCase:first');
console.log(test.length);

console.time('querySelector');
test = document.querySelector(".testCase");
console.timeEnd('querySelector');
console.log(test);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container"></div>

jsFiddle version of snippet

Use the Jquery :first selector like below :

$(".popContent:first");

$("div.popContent:first").html();

You can use the following jQuery expression

alert(jQuery('div.popContent').eq(0).html());