function move() {
var elem = document.getElementById("myBar");
var width = 1;
var counter = 1;
var id = setInterval(frame, 1000);
function frame() {
if (width >= 60) {
clearInterval(id);
} else {
width += 1;
elem.innerHTML = counter++;
elem.style.width = width + 'px';
}
}
}
#myProgress {
width: 120px;
background-color: #ddd;
}
#myBar {
width: 0px;
height: 10px;
background-color: #4CAF50;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>JavaScript Progress Bar</h1>
<div id="myProgress">
<div id="myBar">0</div>
</div>
<br>
<button onclick="move()">Click Me</button>
在上面的代码片段中有一个渐进栏,当点击按钮时它会自动填充,它会通过添加1
的style.width来填充栏。我希望渐进式条形能够平滑地填充,但毫秒数应保持不变,即1000。
发布于 2018-08-20 00:11:11
将transition:width 600ms linear;
添加到
#myBar {
width: 2px;
height: 10px;
background-color: #4CAF50;
transition:width 600ms linear;
}
这将平滑地设置条的宽度动画。
注意:保持过渡时间等于setInterval超时,以避免动画抖动
function move() {
var elem = document.getElementById("myBar");
var width = 1;
var counter = 1;
var id = setInterval(frame, 1000);
function frame() {
if (width >= 60) {
clearInterval(id);
} else {
width += 1;
elem.innerHTML = counter++;
elem.style.width = width + 'px';
}
}
}
#myProgress {
width: 120px;
background-color: #ddd;
}
#myBar {
width: 2px;
height: 10px;
background-color: #4CAF50;
transition:width 1000ms linear;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>JavaScript Progress Bar</h1>
<div id="myProgress">
<div id="myBar"></div>
</div>
<br>
<button onclick="move()">Click Me</button>
CSS中的过渡在两个值之间进行平滑插值。这意味着当你将宽度增加1px时,浏览器将通过动画来增加宽度,这只发生在增加宽度的javascript代码被执行之后。
发布于 2018-08-20 00:11:18
可以渲染的最小单位是像素。
您可以做的是检查某个反转以增加宽度。在下面的示例中,我将宽度增加了10px,以便您可以正确地看到transition
function move() {
var elem = document.getElementById("myBar");
var width = 0;
var counter = 0;
var id = setInterval(frame, 600);
function frame() {
if (width >= 60) {
clearInterval(id);
} else {
counter++
console.log(counter);
if(counter % 5 == 0)
{
width += 10;
elem.style.width = width + 'px';
}
}
}
}
#myProgress {
width: 120px;
background-color: #ddd;
}
#myBar {
width: 2px;
height: 10px;
background-color: #4CAF50;
-webkit-transition: width 0.5s;
-moz-transition: width 0.5s;
-ms-transition: width 0.5s;
-o-transition: width 0.5s;
transition: width 0.5s;
}
<div id="myProgress">
<div id="myBar"></div>
</div>
<br>
<button onclick="move()">Click Me</button>
发布于 2018-08-20 00:16:09
如何调整JavaScript代码以获得所需的结果:
function move() {
var elem = document.getElementById("myBar");
var width = 0.5;
// change the milliseconds to 10 or 5 to fill it relatively faster
var id = setInterval(frame, 20);
function frame() {
if (width >= 120) {
clearInterval(id);
} else {
width += 0.5;
elem.style.width = width + 'px';
}
}
}
#myProgress {
width: 120px;
background-color: #ddd;
}
#myBar {
width: 2px;
height: 10px;
background-color: #4CAF50;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>JavaScript Progress Bar</h1>
<div id="myProgress">
<div id="myBar"></div>
</div>
<br>
<button onclick="move()">Click Me</button>
https://stackoverflow.com/questions/51919478
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