CSS Transition doesn't work with top, bottom, left, right

问题

I have an element with style

position: relative;
transition: all 2s ease 0s;

Then I want to change its position smoothly after clicking on it, but when I add the style change the transition doesn't take place, instead the element moves instantly.

$$('.omre')[0].on('click',function(){
    $$(this).style({top:'200px'});
});

However if I change the color property for example, it changes smoothly.

$$('.omre')[0].on('click',function(){
    $$(this).style({color:'red'});
});

What might be the cause of this? Are there properties that aren't 'transitional'?

EDIT: I guess I should have mentioned that this is not jQuery, it's another library. The code appears to work as intended, styles are being added, but transition only works in second case?

回答1:

Try setting a default value in the css (to let it know where you want it to start out)

CSS

position: relative;
transition: all 2s ease 0s;
top: 0; /* start out at position 0 */

回答2:

Perhaps you need to specify a top value in your css rule set, so that it will know what value to animate from.

回答3:

In my case div position was fixed , adding left position was not enough it started working only after adding display block

left:0; display:block;

回答4:

Something that is not relevant for the OP, but maybe for someone else in the future:

For pixels (px), if the value is "0", the unit can be omitted: right: 0 and right: 0px both work.

However I noticed that in Firefox and Chrome this is not the case for the seconds unit (s). While transition: right 1s ease 0s works, transition: right 1s ease 0 (missing unit s for last value transition-delay) does not (it does work in Edge however).

In the following example, you'll see that right works for both 0px and 0, but transition only works for 0s and it doesn't work with 0.

#box {
    border: 1px solid black;
    height: 240px;
    width: 260px;
    margin: 50px;
    position: relative;
}
.jump {
    position: absolute;
    width: 200px;
    height: 50px;
    color: white;
    padding: 5px;
}
#jump1 {
    background-color: maroon;
    top: 0px;
    right: 0px;
    transition: right 1s ease 0s;
}
#jump2 {
    background-color: green;
    top: 60px;
    right: 0;
    transition: right 1s ease 0s;
}
#jump3 {
    background-color: blue;
    top: 120px;
    right: 0px;
    transition: right 1s ease 0;
}
#jump4 {
    background-color: gray;
    top: 180px;
    right: 0;
    transition: right 1s ease 0;
}
#box:hover .jump {
    right: 50px;
}

<div id="box">
  <div class="jump" id="jump1">right: 0px<br>transition: right 1s ease 0s</div>
  <div class="jump" id="jump2">right: 0<br>transition: right 1s ease 0s</div>
  <div class="jump" id="jump3">right: 0px<br>transition: right 1s ease 0</div>
  <div class="jump" id="jump4">right: 0<br>transition: right 1s ease 0</div>
</div>

回答5:

I ran into this issue today. Here is my hacky solution.

I needed a fixed position element to transition up by 100 pixels as it loaded.

var delay = (ms) => new Promise(res => setTimeout(res, ms));
async function animateView(startPosition,elm){
  for(var i=0; i<101; i++){
    elm.style.top = `${(startPosition-i)}px`;
    await delay(1);
  }
}

回答6:

Are there properties that aren't 'transitional'?

Answer: Yes.

If the property is not listed here it is not 'transitional'.

Reference: Animatable CSS Properties

来源：https://stackoverflow.com/questions/20383393/css-transition-doesnt-work-with-top-bottom-left-right

标签

javascript

css

transition