编辑：我并没有真正提出我在最初问题中应该提出的所有问题。为了帮助寻找类似答案的人更容易做到这一点，这就是问题的最终结果：
如何使用闪烁的光标制作打字机效果，在语句末尾暂停、擦除语句并写入新语句？
在下面查看 Yoshi 的回答。正是这样做的......
【问题讨论】：
标签： jquery
/*** Plugin ***/
(function($) {
// writes the string
//
// @param jQuery $target
// @param String str
// @param Numeric cursor
// @param Numeric delay
// @param Function cb
// @return void
function typeString($target, str, cursor, delay, cb) {
$target.html(function(_, html) {
return html + str[cursor];
});
if (cursor < str.length - 1) {
setTimeout(function() {
typeString($target, str, cursor + 1, delay, cb);
}, delay);
} else {
cb();
}
}
// clears the string
//
// @param jQuery $target
// @param Numeric delay
// @param Function cb
// @return void
function deleteString($target, delay, cb) {
var length;
$target.html(function(_, html) {
length = html.length;
return html.substr(0, length - 1);
});
if (length > 1) {
setTimeout(function() {
deleteString($target, delay, cb);
}, delay);
} else {
cb();
}
}
// jQuery hook
$.fn.extend({
teletype: function(opts) {
var settings = $.extend({}, $.teletype.defaults, opts);
return $(this).each(function() {
(function loop($tar, idx) {
// type
typeString($tar, settings.text[idx], 0, settings.delay, function() {
// delete
setTimeout(function() {
deleteString($tar, settings.delay, function() {
loop($tar, (idx + 1) % settings.text.length);
});
}, settings.pause);
});
}($(this), 0));
});
}
});
// plugin defaults
$.extend({
teletype: {
defaults: {
delay: 100,
pause: 5000,
text: []
}
}
});
}(jQuery));
/*** init ***/
$('#target').teletype({
text: [
'Lorem ipsum dolor sit amet, consetetur sadipscing elitr,',
'sed diam nonumy eirmod tempor invidunt ut labore et dolore',
'magna aliquyam erat, sed diam voluptua. At vero eos et',
'accusam et justo duo dolores et ea rebum. Stet clita kasd',
'gubergren, no sea takimata sanctus est Lorem ipsum dolor sit',
'amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,',
'sed diam nonumy eirmod tempor invidunt ut labore et dolore',
'magna aliquyam erat, sed diam voluptua. At vero eos et accusam',
'et justo duo dolores et ea rebum. Stet clita kasd gubergren,',
'no sea takimata sanctus est Lorem ipsum dolor sit amet.'
]
});
$('#cursor').teletype({
text: ['_', ' '],
delay: 0,
pause: 500
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<span id="target"></span>
<span id="cursor"></span>
<!-- used for the blinking cursor effect -->插件：
(function ($) {
// writes the string
//
// @param jQuery $target
// @param String str
// @param Numeric cursor
// @param Numeric delay
// @param Function cb
// @return void
function typeString($target, str, cursor, delay, cb) {
$target.html(function (_, html) {
return html + str[cursor];
});
if (cursor < str.length - 1) {
setTimeout(function () {
typeString($target, str, cursor + 1, delay, cb);
}, delay);
}
else {
cb();
}
}
// clears the string
//
// @param jQuery $target
// @param Numeric delay
// @param Function cb
// @return void
function deleteString($target, delay, cb) {
var length;
$target.html(function (_, html) {
length = html.length;
return html.substr(0, length - 1);
});
if (length > 1) {
setTimeout(function () {
deleteString($target, delay, cb);
}, delay);
}
else {
cb();
}
}
// jQuery hook
$.fn.extend({
teletype: function (opts) {
var settings = $.extend({}, $.teletype.defaults, opts);
return $(this).each(function () {
(function loop($tar, idx) {
// type
typeString($tar, settings.text[idx], 0, settings.delay, function () {
// delete
setTimeout(function () {
deleteString($tar, settings.delay, function () {
loop($tar, (idx + 1) % settings.text.length);
});
}, settings.pause);
});
}($(this), 0));
});
}
});
// plugin defaults
$.extend({
teletype: {
defaults: {
delay: 100,
pause: 5000,
text: []
}
}
});
}(jQuery));
html：
<span id="target"></span>
<span id="cursor"></span> <!-- used for the blinking cursor effect -->
初始化：
$('#target').teletype({
text: [
'Lorem ipsum dolor sit amet, consetetur sadipscing elitr,',
'sed diam nonumy eirmod tempor invidunt ut labore et dolore',
'magna aliquyam erat, sed diam voluptua. At vero eos et',
'accusam et justo duo dolores et ea rebum. Stet clita kasd',
'gubergren, no sea takimata sanctus est Lorem ipsum dolor sit',
'amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr,',
'sed diam nonumy eirmod tempor invidunt ut labore et dolore',
'magna aliquyam erat, sed diam voluptua. At vero eos et accusam',
'et justo duo dolores et ea rebum. Stet clita kasd gubergren,',
'no sea takimata sanctus est Lorem ipsum dolor sit amet.'
]
});
$('#cursor').teletype({
text: ['_', ' '],
delay: 0,
pause: 500
});
【讨论】：
deleteString(($tar, setting... 周围的一个简单的setTimeout 应该可以做到。
<a href
最后添加了一个简单的函数，中间还有一些变量...
var where, when; //added
$.fn.teletype = function(opts){
var $this = this,
defaults = {
animDelay: 50
},
settings = $.extend(defaults, opts);
var letters = settings.text.length; //added
where = '#' + $($this).attr('id'); //added
when = settings.animDelay; //added
$.each(settings.text, function(i, letter){
setTimeout(function(){
$this.html($this.html() + letter);
if( $($this).html().length == letters ){ reverse(); } // Added to trigger reversing function
}, settings.animDelay * i);
});
};
$(function(){
$('#container').teletype({
animDelay: 100,
text: 'Now is the time for all good men to come to the aid of their country...'
});
});
// Added Reversing Function
function reverse(){
if ($(where).html().length > 0){
x = $(where).html().length - 1;
y = $(where).html().substr(0, x);
$(where).html(y);
setTimeout(reverse , when);
}else{
console.log('Reverse Complete');
clearTimeout(reverse);
}
}
【讨论】：
您还可以查看我的插件 jquery-typewriter，它完全符合您的要求。
它可能没有那么多功能，但值得一看。
它有一个闪烁的光标、彩色文本等，都可以自定义。
【讨论】：