编辑：我并没有真正问出我应该在原始问题中问的所有问题。为了帮助寻找类似答案的人更容易做到这一点，这就是问题最终的结果：
如何使用闪烁的光标使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的答案。它正是这样做的...
演示：http://jsbin.com/araget/5/
/*** 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));
目录：
<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
});
最后添加了一个简单的函数，中间有几个变量...
小提琴
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);
}
}
您还可以查看我的插件jquery-typewriter，它完全可以满足您的需求。
它可能没有那么多功能，但值得一看。
它具有闪烁的光标，彩色文本等，都可以自定义。
这是链接：https://www.npmjs.com/package/jquery-typewriter