在JavaScript中为文字动画

Question

所以我的问题是我要在按Enter时在JS中对文本（不透明度）进行动画，但是我不知道该如何使用我写的代码来做到这一点。我无法解释为什么我不能动画，但是我可以显示我的所有代码，您会理解。

function handle(e){
        if(e.keyCode === 13){
            e.preventDefault();
            theaction();
        }
    }
    function sleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}
function titleCase(str) {
     str = str.toLowerCase().split(' ');
     for(var i = 0; i < str.length; i++){
          str[i] = str[i].split('');
          str[i][0] = str[i][0].toUpperCase();
          str[i] = str[i].join('');
     }
     return str.join(' ');
}
function theaction() {
	var int = document.getElementById("every").value;
	var inp = int.toUpperCase();
	var lop;
	var dom = [".AERO",".BIZ",".CAT",".COM",".COOP",".EDU",".GOV",".INFO",".INT",".JOBS",".MIL",".MOBI",".MUSEUM",
".NAME",".NET",".ORG",".TRAVEL",".AC",".AD",".AE",".AF",".AG",".AI",".AL",".AM",".AN",".AO",".AQ",".AR",".AS",".AT",".AU",".AW",
".AZ",".BA",".BB",".BD",".BE",".BF",".BG",".BH",".BI",".BJ",".BM",".BN",".BO",".BR",".BS",".BT",".BV",".BW",".BY",".BZ",".CA",
".CC",".CD",".CF",".CG",".CH",".CI",".CK",".CL",".CM",".CN",".CO",".CR",".CS",".CU",".CV",".CX",".CY",".CZ",".DE",".DJ",".DK",".DM",
".DO",".DZ",".EC",".EE",".EG",".EH",".ER",".ES",".ET",".EU",".FI",".FJ",".FK",".FM",".FO",".FR",".GA",".GB",".GD",".GE",".GF",".GG",".GH",
".GI",".GL",".GM",".GN",".GP",".GQ",".GR",".GS",".GT",".GU",".GW",".GY",".HK",".HM",".HN",".HR",".HT",".HU",".ID",".IE",".IL",".IM",
".IN",".IO",".IQ",".IR",".IS",".IT",".JE",".JM",".JO",".JP",".KE",".KG",".KH",".KI",".KM",".KN",".KP",".KR",".KW",".KY",".KZ",".LA",".LB",
".LC",".LI",".LK",".LR",".LS",".LT",".LU",".LV",".LY",".MA",".MC",".MD",".MG",".MH",".MK",".ML",".MM",".MN",".MO",".MP",".MQ",
".MR",".MS",".MT",".MU",".MV",".MW",".MX",".MY",".MZ",".NA",".NC",".NE",".NF",".NG",".NI",".NL",".NO",".NP",".NR",".NU",
".NZ",".OM",".PA",".PE",".PF",".PG",".PH",".PK",".PL",".PM",".PN",".PR",".PS",".PT",".PW",".PY",".QA",".RE",".RO",".RU",".RW",
".SA",".SB",".SC",".SD",".SE",".SG",".SH",".SI",".SJ",".SK",".SL",".SM",".SN",".SO",".SR",".ST",".SU",".SV",".SY",".SZ",".TC",".TD",".TF",
".TG",".TH",".TJ",".TK",".TM",".TN",".TO",".TP",".TR",".TT",".TV",".TW",".TZ",".UA",".UG",".UK",".UM",".US",".UY",".UZ", ".VA",".VC",
".VE",".VG",".VI",".VN",".VU",".WF",".WS",".YE",".YT",".YU",".ZA",".ZM",".ZR",".ZW"];
	if (dom.some(function(v) { return inp.indexOf(v) >= 0; })) {
    if (inp.includes("HTTP://") || inp.includes("HTTPS://")) {
    	window.location.href = inp.toLowerCase();
    }
    else {
    	var ht = "http://";
    	var loplink = ht.concat(inp);
    	window.location.href = loplink;
    }
}
else if (inp.includes("GOOGLE:")) {
var googlesearch = inp.substr(7);
window.location.href = "https://www.google.fi/search?q=" + googlesearch.toLowerCase();
}
else if (inp.includes("DDG:")) {
	var ddgsearch = inp.substr(4);
	window.location.href = "https://duckduckgo.com/?q=" + ddgsearch.toLowerCase();
}
else if (inp.includes("QWANT:")) {
	var qwantsearch = inp.substr(6);
	window.location.href = "https://www.qwant.com/?l=en&h=1&hc=1&a=1&s=0&b=1&i=1&r=en&sr=en&q=" + qwantsearch.toLowerCase();
}
else if (inp.includes("HSL:")) {
	var hslsearch = inp.substr(4);
	window.location.href = "https://m.reittiopas.fi/en/index.php?mod=ls&txtSearch=" + hslsearch.toLowerCase() + "&search=Search";
}
else if (inp.includes("MY NAME IS")) {
	var nameis = inp.split("IS ")[1];
	var namelow = nameis.toLowerCase();
	var namefcap = titleCase(namelow);
	var namefinal = namefcap.split(' ').filter(function(v){return v!==' '});
if (namefinal.length < 3) {
	lop = "Hello " + namefinal + "! My name is DAT BOIYIIYIYIYIYI!";
	lop = lop.replace(",", " ");
	document.getElementById("output").innerHTML = lop;
    }
else {
	lop = "You have a beutiful name!";
	document.getElementById("output").innerHTML = lop;
	sleep(5000);
	window.location.href = "http://www.zombo.com";
}	
	
}
else if (inp.includes("BG:")) {
	var bgGoodness = inp.substr(3);
	document.getElementById("theBodyOfAModel").style.backgroundColor = bgGoodness;
}
    
else {
	switch(inp){
	case 'HEY':
	case 'HEY!':
	case 'HI!':
	case 'HI':
	case 'HELLO':
	case 'HELLO!':
		lop = "Hey!";
		break;
	case 'HEY SIRI!':
	case 'HEY SIRI':
	case 'HI SIRI':
	case 'HI SIRI!':
	case 'HELLO SIRI':
	case 'HELLO SIRI!':
		lop = "I'm not Siri! I'm dat BOiiii!";
		break;
	case 'FOO':
		lop = "Bar";
		break;
	case 'BAR':
		lop = "Foo";
		break;
	case 'FOOBAR':
	case 'FOO BAR':
		lop = 'Searching for bars called "Foo".....';
		break;
	case 'WHAT TIME IS IT?':
	case 'WHAT TIME IS IT':
	case 'WHAT IS THE TIME?':
	case 'WHAT IS THE TIME?':
		lop = "DEMO: " + Date();
		break;
	default:
		lop = "U WOT M8??";
		break;
	}
	document.getElementById("output").innerHTML = lop;
}
}
function stylejs() {
	document.getElementById("every").style.width = "600px";
	document.getElementById("every").style.borderColor = "blue";
	document.getElementById("every").style.cursor = "auto";
}

body {
	padding: 0;
	background-color: #ecf0f1;
}
#every {
	font-size: 25px;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-right: 0px;
	margin-bottom: 0px:;
	width: 300px;
	/*340px*/
	height: 30px;
	/*70px*/
	margin-left: -173.4px;
	margin-top: -38.08px;
	padding: 20px;
	vertical-align: middle;
	font-family: 'Open Sans', sans-serif;
	border: 1px solid #000;
	border-radius: 5px;
	background-color: #fff;
	color: #000;
	-webkit-transition: width 0.4s ease-in-out;
    -moz-transition: width 0.4s ease-in-out;
    -o-transition: width 0.4s ease-in-out;
    transition: width 0.4s ease-in-out;
}
#every:hover {
	border-color: #2980b9;
	background-color: #fff;
	color: #000;
}
#every:focus {
    -webkit-transition: width 0.4s ease-in-out;
    -moz-transition: width 0.4s ease-in-out;
    -o-transition: width 0.4s ease-in-out;
    transition: width 0.4s ease-in-out;
}
#every:not(:focus) {
	cursor: pointer;
}
#output {
	padding: 0px;
	font-size: 28px;
	font-family: 'Open Sans', sans-serif;
	margin: 0px;
	text-align: center;
	-webkit-user-select: none;
 	-moz-user-select: none;
  	-ms-user-select: none;
  	user-select: none;
  	-webkit-transition: opacity 0.5s ease-in-out;
    -moz-transition: opacity 0.5s ease-in-out;
    -o-transition: opacity 0.5s ease-in-out;
    transition: opacity 0.5s ease-in-out;
}
#outwrapper {
	height: 120px;
	width: 500px;
	position: absolute;
	top: 55%;
	left: 50%;
	padding: 0px;
	margin-left: -250px;
	margin-top: 0px;
	margin-bottom: 0px:
	margin-right: 0px;
	text-align: center;
}

<body id="theBodyOfAModel">
<form onkeypress="handle(event)" action="#">
<input onclick="stylejs();" autocomplete="off" placeholder="Type Something..." type="text" id="every"/>
</form>
<div id="outwrapper">
<p id="output"></p>
</div>

http://jsbin.com/sevesujubo/edit?html，js，output

我对怪异的ID和功能名称感到抱歉。而且也没有jQuery plz，即使它会变得更容易。

P.S即使您无法帮助我，如果您可以改进我的代码，那就太好了。谢谢（：

Answer 1

如果我理解，请在渲染文本上设置一个不透明度的动画：将过渡属性设置为output段落（在您的CSS中已经设置）并在句柄功能中添加以下代码;

function handle(e){
  if(e.keyCode === 13){
    e.preventDefault();
    //---- added code
    document.getElementById("output").style.opacity = 0;
    setTimeout(function(){
      theaction();
      document.getElementById("output").style.opacity = 1;
    },500);
    //----
  }
}

因此，等待500 millisconds之后，首先将不透明度设置为0，然后执行theaction();，然后再次将不透明度设置为1（CSS过渡将使Ennimation）

工作小提琴下方：

function handle(e){
  if(e.keyCode === 13){
    e.preventDefault();
    document.getElementById("output").style.opacity = 0;
    setTimeout(function(){
      theaction();
      document.getElementById("output").style.opacity = 1;
      //alert("yo")
    },500);
  }
}
function sleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}
function titleCase(str) {
   str = str.toLowerCase().split(' ');
   for(var i = 0; i < str.length; i++){
        str[i] = str[i].split('');
        str[i][0] = str[i][0].toUpperCase();
        str[i] = str[i].join('');
   }
   return str.join(' ');
}
function theaction() {
	var int = document.getElementById("every").value;
	var inp = int.toUpperCase();
	var lop;
	var dom = [".AERO",".BIZ",".CAT",".COM",".COOP",".EDU",".GOV",".INFO",".INT",".JOBS",".MIL",".MOBI",".MUSEUM",
".NAME",".NET",".ORG",".TRAVEL",".AC",".AD",".AE",".AF",".AG",".AI",".AL",".AM",".AN",".AO",".AQ",".AR",".AS",".AT",".AU",".AW",
".AZ",".BA",".BB",".BD",".BE",".BF",".BG",".BH",".BI",".BJ",".BM",".BN",".BO",".BR",".BS",".BT",".BV",".BW",".BY",".BZ",".CA",
".CC",".CD",".CF",".CG",".CH",".CI",".CK",".CL",".CM",".CN",".CO",".CR",".CS",".CU",".CV",".CX",".CY",".CZ",".DE",".DJ",".DK",".DM",
".DO",".DZ",".EC",".EE",".EG",".EH",".ER",".ES",".ET",".EU",".FI",".FJ",".FK",".FM",".FO",".FR",".GA",".GB",".GD",".GE",".GF",".GG",".GH",
".GI",".GL",".GM",".GN",".GP",".GQ",".GR",".GS",".GT",".GU",".GW",".GY",".HK",".HM",".HN",".HR",".HT",".HU",".ID",".IE",".IL",".IM",
".IN",".IO",".IQ",".IR",".IS",".IT",".JE",".JM",".JO",".JP",".KE",".KG",".KH",".KI",".KM",".KN",".KP",".KR",".KW",".KY",".KZ",".LA",".LB",
".LC",".LI",".LK",".LR",".LS",".LT",".LU",".LV",".LY",".MA",".MC",".MD",".MG",".MH",".MK",".ML",".MM",".MN",".MO",".MP",".MQ",
".MR",".MS",".MT",".MU",".MV",".MW",".MX",".MY",".MZ",".NA",".NC",".NE",".NF",".NG",".NI",".NL",".NO",".NP",".NR",".NU",
".NZ",".OM",".PA",".PE",".PF",".PG",".PH",".PK",".PL",".PM",".PN",".PR",".PS",".PT",".PW",".PY",".QA",".RE",".RO",".RU",".RW",
".SA",".SB",".SC",".SD",".SE",".SG",".SH",".SI",".SJ",".SK",".SL",".SM",".SN",".SO",".SR",".ST",".SU",".SV",".SY",".SZ",".TC",".TD",".TF",
".TG",".TH",".TJ",".TK",".TM",".TN",".TO",".TP",".TR",".TT",".TV",".TW",".TZ",".UA",".UG",".UK",".UM",".US",".UY",".UZ", ".VA",".VC",
".VE",".VG",".VI",".VN",".VU",".WF",".WS",".YE",".YT",".YU",".ZA",".ZM",".ZR",".ZW"];
	if (dom.some(function(v) { return inp.indexOf(v) >= 0; })) {
    if (inp.includes("HTTP://") || inp.includes("HTTPS://")) {
    	window.location.href = inp.toLowerCase();
    }
    else {
    	var ht = "http://";
    	var loplink = ht.concat(inp);
    	window.location.href = loplink;
    }
}
else if (inp.includes("GOOGLE:")) {
var googlesearch = inp.substr(7);
window.location.href = "https://www.google.fi/search?q=" + googlesearch.toLowerCase();
}
else if (inp.includes("DDG:")) {
	var ddgsearch = inp.substr(4);
	window.location.href = "https://duckduckgo.com/?q=" + ddgsearch.toLowerCase();
}
else if (inp.includes("QWANT:")) {
	var qwantsearch = inp.substr(6);
	window.location.href = "https://www.qwant.com/?l=en&h=1&hc=1&a=1&s=0&b=1&i=1&r=en&sr=en&q=" + qwantsearch.toLowerCase();
}
else if (inp.includes("HSL:")) {
	var hslsearch = inp.substr(4);
	window.location.href = "https://m.reittiopas.fi/en/index.php?mod=ls&txtSearch=" + hslsearch.toLowerCase() + "&search=Search";
}
else if (inp.includes("MY NAME IS")) {
	var nameis = inp.split("IS ")[1];
	var namelow = nameis.toLowerCase();
	var namefcap = titleCase(namelow);
	var namefinal = namefcap.split(' ').filter(function(v){return v!==' '});
if (namefinal.length < 3) {
	lop = "Hello " + namefinal + "! My name is DAT BOIYIIYIYIYIYI!";
	lop = lop.replace(",", " ");
	document.getElementById("output").innerHTML = lop;
    }
else {
	lop = "You have a beutiful name!";
	document.getElementById("output").innerHTML = lop;
	sleep(5000);
	window.location.href = "http://www.zombo.com";
}	
	
}
else if (inp.includes("BG:")) {
	var bgGoodness = inp.substr(3);
	document.getElementById("theBodyOfAModel").style.backgroundColor = bgGoodness;
}
    
else {
	switch(inp){
	case 'HEY':
	case 'HEY!':
	case 'HI!':
	case 'HI':
	case 'HELLO':
	case 'HELLO!':
		lop = "Hey!";
		break;
	case 'HEY SIRI!':
	case 'HEY SIRI':
	case 'HI SIRI':
	case 'HI SIRI!':
	case 'HELLO SIRI':
	case 'HELLO SIRI!':
		lop = "I'm not Siri! I'm dat BOiiii!";
		break;
	case 'FOO':
		lop = "Bar";
		break;
	case 'BAR':
		lop = "Foo";
		break;
	case 'FOOBAR':
	case 'FOO BAR':
		lop = 'Searching for bars called "Foo".....';
		break;
	case 'WHAT TIME IS IT?':
	case 'WHAT TIME IS IT':
	case 'WHAT IS THE TIME?':
	case 'WHAT IS THE TIME?':
		lop = "DEMO: " + Date();
		break;
	default:
		lop = "U WOT M8??";
		break;
	}
	document.getElementById("output").innerHTML = lop;
}
}
function stylejs() {
	document.getElementById("every").style.width = "600px";
	document.getElementById("every").style.borderColor = "blue";
	document.getElementById("every").style.cursor = "auto";
}

body {
	padding: 0;
	background-color: #ecf0f1;
}
#every {
	font-size: 25px;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-right: 0px;
	margin-bottom: 0px:;
	width: 300px;
	/*340px*/
	height: 30px;
	/*70px*/
	margin-left: -173.4px;
	margin-top: -38.08px;
	padding: 20px;
	vertical-align: middle;
	font-family: 'Open Sans', sans-serif;
	border: 1px solid #000;
	border-radius: 5px;
	background-color: #fff;
	color: #000;
	-webkit-transition: width 0.4s ease-in-out;
    -moz-transition: width 0.4s ease-in-out;
    -o-transition: width 0.4s ease-in-out;
    transition: width 0.4s ease-in-out;
}
#every:hover {
	border-color: #2980b9;
	background-color: #fff;
	color: #000;
}
#every:focus {
    -webkit-transition: width 0.4s ease-in-out;
    -moz-transition: width 0.4s ease-in-out;
    -o-transition: width 0.4s ease-in-out;
    transition: width 0.4s ease-in-out;
}
#every:not(:focus) {
	cursor: pointer;
}
#output {
	padding: 0px;
	font-size: 28px;
	font-family: 'Open Sans', sans-serif;
	margin: 0px;
	text-align: center;
	-webkit-user-select: none;
 	-moz-user-select: none;
  	-ms-user-select: none;
  	user-select: none;
  	-webkit-transition: opacity 0.5s ease-in-out;
    -moz-transition: opacity 0.5s ease-in-out;
    -o-transition: opacity 0.5s ease-in-out;
    transition: opacity 0.5s ease-in-out;
}
#outwrapper {
	height: 120px;
	width: 500px;
	position: absolute;
	top: 55%;
	left: 50%;
	padding: 0px;
	margin-left: -250px;
	margin-top: 0px;
	margin-bottom: 0px:
	margin-right: 0px;
	text-align: center;
}

<body id="theBodyOfAModel">
<form onkeypress="handle(event)" action="#">
<input onclick="stylejs();" autocomplete="off" placeholder="Type Something..." type="text" id="every"/>
</form>
<div id="outwrapper">
<p id="output"></p>
</div>