【网站美化】为你的网站添加文字输入特效

如上图所示，可在你网站任意文本框内输入文字时显示该效果，老墨吻将js代码贴到下方。

(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 colorful
POWERMODE.shake = false;    // turn off shake
document.body.addEventListener('input', POWERMODE);

上方为js代码，可创建一个以任意名称的js文件，将其上传到你的网站或者其他可远程调用的云储中，并将路径以下方格式粘贴至你的网站foot标签中。

<script type="text/javascript" src="文件路径">
/* 文字特效 */
</script>

当然不止这一种方法，还有另一种方法，代码相同，实现原理相仿，如下。

第二种方法

还是使用上方js代码，只不过是将路径代码删除，将js代码粘贴至</script>结束前。

教程结束，出的比较仓促，月底了嘛，在不水俩帖子……