具体效果见本博客评论输入打字效果。 如何加入打字机特效(function webpackUniversalModuleDefinition(a,b){if(typeof exports==="object"&&typeof module==="object"){module.exports=b()}else{if(typeof define==="function"&&define.amd){define([],b)}else{if(typeof exports==="object"){exports["POWERMODE"]=b()}else{a["POWERMODE"]=b()}}}})(this,function(){return(function(a){var b={};function c(e){if(b[e]){return b[e].exports}var d=b[e]={exports:{},id:e,loaded:false};a[e].call(d.exports,d,d.exports,c);d.loaded=true;return d.exports}c.m=a;c.c=b;c.p="";return c(0)})([function(c,g,b){var d=document.createElement("canvas");d.width=window.innerWidth;d.height=window.innerHeight;d.style.cssText="position:fixed;top:0;left:0;pointer-events:none;z-index:999999";window.addEventListener("resize",function(){d.width=window.innerWidth;d.height=window.innerHeight});document.body.appendChild(d);var a=d.getContext("2d");var n=[];var j=0;var k=120;var f=k;var p=false;o.shake=true;function l(r,q){return Math.random()*(q-r)+r}function m(r){if(o.colorful){var q=l(0,360);return"hsla("+l(q-10,q+10)+", 100%, "+l(50,80)+"%, "+1+")"}else{return window.getComputedStyle(r).color}}function e(){var t=document.activeElement;var v;if(t.tagName==="TEXTAREA"||(t.tagName==="INPUT"&&t.getAttribute("type")==="text")){var u=b(1)(t,t.selectionStart);v=t.getBoundingClientRect();return{x:u.left+v.left,y:u.top+v.top,color:m(t)}}var s=window.getSelection();if(s.rangeCount){var q=s.getRangeAt(0);var r=q.startContainer;if(r.nodeType===document.TEXT_NODE){r=r.parentNode}v=q.getBoundingClientRect();return{x:v.left,y:v.top,color:m(r)}}return{x:0,y:0,color:"transparent"}}function h(q,s,r){return{x:q,y:s,alpha:1,color:r,velocity:{x:-1+Math.random()*2,y:-3.5+Math.random()*2}}}function o(){var t=e();var s=5+Math.round(Math.random()*10);while(s--){n[j]=h(t.x,t.y,t.color);j=(j+1)%500}f=k;if(!p){requestAnimationFrame(i)}if(o.shake){var r=1+2*Math.random();var q=r*(Math.random()>0.5?-1:1);var u=r*(Math.random()>0.5?-1:1);document.body.style.marginLeft=q+"px";document.body.style.marginTop=u+"px";setTimeout(function(){document.body.style.marginLeft="";document.body.style.marginTop=""},75)}}o.colorful=false;function i(){if(f>0){requestAnimationFrame(i);f--;p=true}else{p=false}a.clearRect(0,0,d.width,d.height);for(var q=0;q<n.length;++q){var r=n[q];if(r.alpha<=0.1){continue}r.velocity.y+=0.075;r.x+=r.velocity.x;r.y+=r.velocity.y;r.alpha*=0.96;a.globalAlpha=r.alpha;a.fillStyle=r.color;a.fillRect(Math.round(r.x-1.5),Math.round(r.y-1.5),3,3)}}requestAnimationFrame(i);c.exports=o},function(b,a){(function(){var d=["direction","boxSizing","width","height","overflowX","overflowY","borderTopWidth","borderRightWidth","borderBottomWidth","borderLeftWidth","borderStyle","paddingTop","paddingRight","paddingBottom","paddingLeft","fontStyle","fontVariant","fontWeight","fontStretch","fontSize","fontSizeAdjust","lineHeight","fontFamily","textAlign","textTransform","textIndent","textDecoration","letterSpacing","wordSpacing","tabSize","MozTabSize"];var e=window.mozInnerScreenX!=null;function c(k,l,o){var h=o&&o.debug||false;if(h){var i=document.querySelector("#input-textarea-caret-position-mirror-div");if(i){i.parentNode.removeChild(i)}}var f=document.createElement("div");f.id="input-textarea-caret-position-mirror-div";document.body.appendChild(f);var g=f.style;var j=window.getComputedStyle?getComputedStyle(k):k.currentStyle;g.whiteSpace="pre-wrap";if(k.nodeName!=="INPUT"){g.wordWrap="break-word"}g.position="absolute";if(!h){g.visibility="hidden"}d.forEach(function(p){g[p]=j[p]});if(e){if(k.scrollHeight>parseInt(j.height)){g.overflowY="scroll"}}else{g.overflow="hidden"}f.textContent=k.value.substring(0,l);if(k.nodeName==="INPUT"){f.textContent=f.textContent.replace(/\s/g,"\u00a0")}var n=document.createElement("span");n.textContent=k.value.substring(l)||".";f.appendChild(n);var m={top:n.offsetTop+parseInt(j["borderTopWidth"]),left:n.offsetLeft+parseInt(j["borderLeftWidth"])};if(h){n.style.backgroundColor="#aaa"}else{document.body.removeChild(f)}return m}if(typeof b!="undefined"&&typeof b.exports!="undefined"){b.exports=c}else{window.getCaretCoordinates=c}}())}])});POWERMODE.colorful=true;POWERMODE.shake=false;document.body.addEventListener("input",POWERMODE);
<!-- In typecho daziji --><script type="text/javascript" src="(这个脚本的路径)"></script>
注:这个JavaScript 脚本已经经过混淆压缩,相比原版脚本更节省流量。 未压缩版JS(function webpackUniversalModuleDefinition(root, factory) {
if (typeof exports === 'object' && typeof module === 'object') module.exports = factory();
else if (typeof define === 'function' && define.amd) define([], factory);
else if (typeof exports === 'object') exports["POWERMODE"] = factory();
else root["POWERMODE"] = factory()})(this, function() {
return (function(modules) {
var installedModules = {};
function __webpack_require__(moduleId) {
if (installedModules[moduleId]) return installedModules[moduleId].exports;
var module = installedModules[moduleId] = {
exports: {},
id: moduleId,
loaded: false
};
modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
module.loaded = true;
return module.exports }
__webpack_require__.m = modules;
__webpack_require__.c = installedModules;
__webpack_require__.p = "";
return __webpack_require__(0)
})([function(module, exports, __webpack_require__) {
'use strict';
var canvas = document.createElement('canvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.style.cssText = 'position:fixed;top:0;left:0;pointer-events:none;z-index:999999';
window.addEventListener('resize', function() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight });
document.body.appendChild(canvas);
var context = canvas.getContext('2d');
var particles = [];
var particlePointer = 0;
var frames = 120;
var framesRemain = frames;
var rendering = false;
POWERMODE.shake = true;
function getRandom(min, max) {
return Math.random() * (max - min) + min }
function getColor(el) {
if (POWERMODE.colorful) {
var u = getRandom(0, 360);
return 'hsla(' + getRandom(u - 10, u + 10) + ', 100%, ' + getRandom(50, 80) + '%, ' + 1 + ')'
} else {
return window.getComputedStyle(el).color }
}
function getCaret() {
var el = document.activeElement;
var bcr;
if (el.tagName === 'TEXTAREA' || (el.tagName === 'INPUT' && el.getAttribute('type') === 'text')) {
var offset = __webpack_require__(1)(el, el.selectionStart);
bcr = el.getBoundingClientRect();
return {
x: offset.left + bcr.left,
y: offset.top + bcr.top,
color: getColor(el)
}
}
var selection = window.getSelection();
if (selection.rangeCount) {
var range = selection.getRangeAt(0);
var startNode = range.startContainer;
if (startNode.nodeType === document.TEXT_NODE) {
startNode = startNode.parentNode }
bcr = range.getBoundingClientRect();
return {
x: bcr.left,
y: bcr.top,
color: getColor(startNode)
}
}
return {
x: 0,
y: 0,
color: 'transparent'
}
}
function createParticle(x, y, color) {
return {
x: x,
y: y,
alpha: 1,
color: color,
velocity: {
x: -1 + Math.random() * 2,
y: -3.5 + Math.random() * 2
}
}
}
function POWERMODE() {
{
var caret = getCaret();
var numParticles = 5 + Math.round(Math.random() * 10);
while (numParticles--) {
particles[particlePointer] = createParticle(caret.x, caret.y, caret.color);
particlePointer = (particlePointer + 1) % 500
}
framesRemain = frames;
if (!rendering) {
requestAnimationFrame(loop)
}
} {
if (POWERMODE.shake) {
var intensity = 1 + 2 * Math.random();
var x = intensity * (Math.random() > 0.5 ? -1 : 1);
var y = intensity * (Math.random() > 0.5 ? -1 : 1);
document.body.style.marginLeft = x + 'px';
document.body.style.marginTop = y + 'px';
setTimeout(function() {
document.body.style.marginLeft = '';
document.body.style.marginTop = ''
}, 75)
}
}
};
POWERMODE.colorful = false;
function loop() {
if (framesRemain > 0) {
requestAnimationFrame(loop);
framesRemain--;
rendering = true
} else {
rendering = false
}
context.clearRect(0, 0, canvas.width, canvas.height);
for (var i = 0; i < particles.length; ++i) {
var particle = particles[i];
if (particle.alpha <= 0.1) continue;
particle.velocity.y += 0.075;
particle.x += particle.velocity.x;
particle.y += particle.velocity.y;
particle.alpha *= 0.96;
context.globalAlpha = particle.alpha;
context.fillStyle = particle.color;
context.fillRect(Math.round(particle.x - 1.5), Math.round(particle.y - 1.5), 3, 3)
}
}
requestAnimationFrame(loop);
module.exports = POWERMODE }, function(module, exports) {
(function() {
var properties = ['direction', 'boxSizing', 'width', 'height',
'overflowX', 'overflowY', 'borderTopWidth', 'borderRightWidth',
'borderBottomWidth', 'borderLeftWidth', 'borderStyle', 'paddingTop',
'paddingRight', 'paddingBottom', 'paddingLeft', 'fontStyle',
'fontVariant', 'fontWeight', 'fontStretch', 'fontSize',
'fontSizeAdjust', 'lineHeight', 'fontFamily', 'textAlign',
'textTransform', 'textIndent', 'textDecoration', 'letterSpacing',
'wordSpacing', 'tabSize', 'MozTabSize'];
var isFirefox = window.mozInnerScreenX != null;
function getCaretCoordinates(element, position, options) {
var debug = options && options.debug || false;
if (debug) {
var el = document.querySelector('#input-textarea-caret-position-mirror-div');
if (el) {
el.parentNode.removeChild(el)
}
}
var div = document.createElement('div');
div.id = 'input-textarea-caret-position-mirror-div';
document.body.appendChild(div);
var style = div.style;
var computed = window.getComputedStyle ? getComputedStyle(element) : element.currentStyle;
style.whiteSpace = 'pre-wrap';
if (element.nodeName !== 'INPUT') style.wordWrap = 'break-word';
style.position = 'absolute';
if (!debug) style.visibility = 'hidden';
properties.forEach(function(prop) {
style[prop] = computed[prop]
});
if (isFirefox) {
if (element.scrollHeight > parseInt(computed.height)) style.overflowY = 'scroll'
} else {
style.overflow = 'hidden'
}
div.textContent = element.value.substring(0, position);
if (element.nodeName === 'INPUT') div.textContent = div.textContent.replace(/\s/g, "\u00a0");
var span = document.createElement('span');
span.textContent = element.value.substring(position) || '.';
div.appendChild(span);
var coordinates = {
top: span.offsetTop + parseInt(computed['borderTopWidth']),
left: span.offsetLeft + parseInt(computed['borderLeftWidth'])
};
if (debug) {
span.style.backgroundColor = '#aaa'
} else {
document.body.removeChild(div)
}
return coordinates }
if (typeof module != "undefined" && typeof module.exports != "undefined") {
module.exports = getCaretCoordinates } else {
window.getCaretCoordinates = getCaretCoordinates }
}())
}
])});POWERMODE.colorful = true; // make power mode colorfulPOWERMODE.shake = false; // turn off shakedocument.body.addEventListener('input', POWERMODE);
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