variable value is not appending in h2 element

问题

DEMO

Hi, I have variable called "var node = "Hi Mr", Iam trying to append this value on click of a button, im  not sure why its not appending. 
I tried using html and text, none worked.

JS:

$(function(){
    $('.customerResultIndex').on('click',function(){
        openCustomerOverlay();
    })

});
function openCustomerOverlay(){
    var node = "Hi Mr"
    $('.customerPopHeading').text(node)

    var overlayContainer = 
    '<div class="customerOverlayShadow">'+
        '<div class="customerOverlay borderRadius10px">'+
            '<h2 class="customerPopHeading">-- </h2>'+

回答1:

Create the element first, them after this, set the text... You are setting the text befero creating it.

Put this:

var node = "Hi Mr";
$('.customerPopHeading').text(node);

After this:

$(document).keyup(function(e) {
    if (e.keyCode == 27) {  
        $('.customerOverlayShadow').remove();   
    }
});

Final result: http://jsfiddle.net/pc2tx1us/3/

回答2:

You cannot append a value like this instead you can concatenate it this way:

'<h2 class="customerPopHeading">--'+ node +'</h2>'+

or you can move this line:

$('.customerPopHeading').text(node);

below this:

$("body").prepend(overlayContainer).focus();
$('.customerPopHeading').text(node);

Fiddle

The element has to be available to make a jQuery selector, here when you prepend in body only then it is available to put the desired text in it.

来源：https://stackoverflow.com/questions/26800685/variable-value-is-not-appending-in-h2-element

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