How do you set `innerText` with fade-in effect?

Question

Say you have a button to replace paragraphs within the same area, same page.

Can you make every switch, via setting innerText or textContent , fade in every time?

I now use keyframes to change its opacity from 0 to 1, but it only works for the first paragraph after the page is loaded. After that, whenever I replace the text with innerText , the effect doesn't show at all.

All the text waiting in line is hard coded in JavaScript, not in HTML - if it makes a change.

Answer 1

You will need to either introduce a delay or a repaint. Introducing a delay is probably the easiest.

p.classList.add('hide');               // add the class
setTimeout(function() {                // delay and 
    p.textContent = txtList[idx];      // change text
    idx = (idx + 1) % txtList.length;
}, 500);
setTimeout(function() {                // delay and 
    p.classList.remove('hide')         // remove the class
}, 500);

Fiddle: http://jsfiddle.net/abhitalks/rdnt9d5w/

Snippet:

 var txtList = [ 'Lorem', 'ipsum', 'dolor', 'sit', 'amet', 'Lorem ipsum dolor sit amet' ], idx = 0, p = document.getElementById('p1'); document.getElementById('btn1').addEventListener('click', fadein); function fadein() { p.classList.add('hide'); setTimeout(function() { p.textContent = txtList[idx]; idx = (idx + 1) % txtList.length; }, 500); setTimeout(function() { p.classList.remove('hide') }, 500); } 

 p { opacity: 1; transition: all 0.5s; } p.hide { opacity: 0; } 

 <p id="p1">Lorem ipsum dolor sit amet</p> <hr /> <button id="btn1">Change</button> 

Answer 2

I would do it something like this:

 var i = 0; var strings = ['first string........', 'second string.........', 'third string..........', 'fourth string...............']; $('#add-text').click(function () { if (i > strings.length - 1) i = 0; var $result = $('#result'); $result.fadeOut("fast", function () { $result.text(strings[i]).delay(300).fadeIn('slow'); i++; }); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <button id="add-text">Add Text</button><br> <p id="result">Here is some default text....</p> 

Answer 3

Look this Fiddle

You can use jQuery text() function followed by fadeIn() to achieve this effect. Not sure if this works for Javascript's innerText

 $(this).text('Some other text!').fadeIn(500);

Answer 4

Have you tried adding a css transition?

For example, I use this to css to delay the background color transitions:

.fader {
        color: #bbb;
        padding: 6px;
        -webkit-transition: all 0.5s;
        transition: all 0.5s; 
}

There is more informaiton on transitions on the w3c schools page: http://www.w3schools.com/css/css3_transitions.asp