![](/img/trans.png)
[英]How can I make Sublime Text's “Improved Native for-loop” increment like a normal for-loop?
[英]How to animate the text in a for-loop?
我正在嘗試將側邊欄動畫效果創建為:
<div class="sidebar-description sidebar-personal-info-section">
A passionate
<span class="changing-keywords" id="change">
<strong>
<b class="hidden">software engineer</b>
<b class="hidden">lifelong learner</b>
<b class="hidden">blogger</b>
<b class="hidden">traveller</b>
</strong>
</span><br>
</div>
我已經編寫了HTML代碼,但問題是,如何以slide-out
動畫效果一次延遲顯示一次每個文本? 循環應該無限次地工作。
通過使用CSS關鍵幀動畫使其變得簡單。
下面是一個例子。
body{ font-family:calibri; } .codinfox-changing-keywords{ vertical-align:top; overflow:hidden; height:20px; position:relative; display: inline-block; width: 250px; } .hidden{ position:absolute; top: 20px; display:inline-block; width:250px; opacity:0; animation: slideme 8s infinite; } .hidden:nth-child(3){ animation-delay: 2s; } .hidden:nth-child(5){ animation-delay: 4s; } .hidden:nth-child(7){ animation-delay: 6s; } @keyframes slideme { 0% { top: 20px; opacity:0; } 5% { top: 0px; opacity:1; } 10%{ top : 0; opacity:1; } 20%{ opacity:1; } 25% { opacity:0.1; top : 0; } 30% { opacity:0; top: 20px; } }
<div class="codinfox-sidebar-description sidebar-personal-info-section"> A passionate <div class="codinfox-changing-keywords" id="change"> <strong> <b class="hidden">software engineer</b><br/> <b class="hidden">lifelong learner</b><br/> <b class="hidden">blogger</b><br/> <b class="hidden">traveller</b> </strong> </div> </div>
您也可以在這里進行測試!
首先,您需要對HTML進行一些處理。 <strong>
標簽不應用於設置樣式,更不用說<b>
標簽。 下面是我的代碼版本。 首先是HTML:
<div class="codinfox-sidebar-description sidebar-personal-info-section">
A passionate
<span class="changing-keyword shown">software engineer</span>
<span class="changing-keyword">lifelong learner</span>
<span class="changing-keyword">blogger</span>
<span class="changing-keyword">traveller</span>
</div>
我可以自由地更改類名,並刪除一些我認為在這里不必要的標記。 現在,JavaScript:
const changingKeywords = document.querySelectorAll('span.changing-keyword');
const keywordsToggle = setKeywordsToggle(changingKeywords);
function setKeywordsToggle (keywords) {
let index = 0;
return setInterval(() => {
keywords[index].classList.remove('shown');
if (++index >= keywords.length)
index = 0;
keywords[index].classList.add('shown');
}, 2000);
}
注意,我實際上返回了setInterval()函數,並將其分配給keywordToggle變量。 這樣,如果我想停止動畫,可以通過運行clearInterval()輕松地停止動畫。 該代碼在找到的所有關鍵字之間切換,並將顯示的類分配給由index變量的值確定的元素。
最后,示例CSS:
.sidebar-personal-info-section {
position: relative;
}
.changing-keyword {
font-weight: bold;
opacity: 0;
transition: opacity 1s, visibility 1s;
visibility: collapse;
position: absolute;
padding-left: .2rem;
}
.shown {
opacity: 1;
visibility: visible;
}
注意可見性過渡,它實際上是過渡延遲。 除此之外,我必須使用position屬性來確保每個關鍵字都位於“熱情”字詞附近,否則每個字詞都將以其原始位置出現(我沒有使用display:none,因為它不可設置動畫)。
工作示例:
const changingKeywords = document.querySelectorAll('span.changing-keyword'); const keywordsToggle = setKeywordsToggle(changingKeywords); function setKeywordsToggle (keywords) { let index = 0; return setInterval(() => { keywords[index].classList.remove('shown'); if (++index >= keywords.length) index = 0; keywords[index].classList.add('shown'); }, 2000); }
.sidebar-personal-info-section { position: relative; } .changing-keyword { font-weight: bold; opacity: 0; transition: opacity 1s, visibility 1s; visibility: collapse; position: absolute; padding-left: .2rem; } .shown { opacity: 1; visibility: visible; }
<div class="codinfox-sidebar-description sidebar-personal-info-section"> A passionate <span class="changing-keyword shown">software engineer</span> <span class="changing-keyword">lifelong learner</span> <span class="changing-keyword">blogger</span> <span class="changing-keyword">traveller</span> </div>
我又快又臟的樣子會像這樣。
// add rotate to Array
Array.prototype.rotate = function(n) {
return this.slice(n, this.length).concat(this.slice(0, n));
}
// setup array
const jobs = ['employee', 'manager'];
// rotate jobs function
const rotateJobs = () => {
document.querySelector('#id').innerHtml = jobs.rotate(1).shift();
}
// set interval
setInterval(rotateJobs, 1000);
淡入/滑動動畫應在CSS過渡中處理。
這件事我終於想通了!
var title = ['software engineer', 'tech blogger', 'traveller', 'lifelong learner'];
var i = 0; // the index of the current item to show
setInterval(function() { // setInterval makes it run repeatedly
document
.getElementById('change')
.innerHTML = title[i++]; // get the item and increment
if (i == title.length) i = 0; // reset to first element if you've reached the end
}, 2000);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.