JS特效：一个打字绚烂烟花的特效
前言：
转载警告
该特效转载http://mlldxe.cn/archives/541,本来是仅仅支持wordpress的,但顺手被我抠出来放回javascript中了。(●’◡’●)好有成就感呢！
绚烂警告
该代码效果及其绚烂,注意安全!
好吧好吧,乱解刨别人代码也是不对的.
代码:
原生代码:
var sw = window.screen.width;
if (sw > 1200) {
(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 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.selectionEnd);
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
}
}
{
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)
}
}
if (!rendering) {
requestAnimationFrame(loop)
}
}
;POWERMODE.colorful = false;
function loop() {
rendering = true;
context.clearRect(0, 0, canvas.width, canvas.height);
var rendered = false;
var rect = canvas.getBoundingClientRect();
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) - rect.left, Math.round(particle.y - 1.5) - rect.top, 3, 3);
rendered = true
}
if (rendered) {
requestAnimationFrame(loop)
} else {
rendering = false
}
}
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
}
}())
}
)])
})
}
var sw=window.screen.width;
if (sw>1200) {
POWERMODE.colorful=true;
POWERMODE.shake=true;
document.body.addEventListener('input',POWERMODE)
}Tampermonkey用户有福了!
// ==UserScript==
// @name 打字敲击特效
// @namespace /
// @version 0.1
// @description ?
// @author CYF
// @match *://*/*
// @grant none
// ==/UserScript==
var sw = window.screen.width;
if (sw > 1200) {
(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 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.selectionEnd);
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
}
}
{
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)
}
}
if (!rendering) {
requestAnimationFrame(loop)
}
}
;POWERMODE.colorful = false;
function loop() {
rendering = true;
context.clearRect(0, 0, canvas.width, canvas.height);
var rendered = false;
var rect = canvas.getBoundingClientRect();
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) - rect.left, Math.round(particle.y - 1.5) - rect.top, 3, 3);
rendered = true
}
if (rendered) {
requestAnimationFrame(loop)
} else {
rendering = false
}
}
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
}
}())
}
)])
})
}
var sw=window.screen.width;
if (sw>1200) {
POWERMODE.colorful=true;
POWERMODE.shake=true;
document.body.addEventListener('input',POWERMODE)
}修改提示:
最后几行:
var sw=window.screen.width;
if (sw>1200) {
POWERMODE.colorful=true;
POWERMODE.shake=true;
document.body.addEventListener('input',POWERMODE)
}中POWERMODE.colorful=true;指是否开启多彩颜色。而POWERMODE.shake=true;指是否开启屏幕震荡.
默认全部开启.
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