|
正文开始 目前很多实现剪贴板复制操作是通过flash+js实现的，但是随着各个浏览器厂商屏蔽flash后，这种方法不再是可行的。由于HTML5提供了剪贴板操作事件，我们可以通过Hhtml5的提供的oncopy,oncut,onpaste三个事件实现上述功能。<p><br /></p><p> github上有一个开源的基于上述方法实现的插件clipboardjs（https://clipboardjs.com/）。他可以实现复制，剪切，黏贴操作。具体调用如下：</p><p> <script src="clipboard.min.js"></script> <br /></p> <button class="btn" data-clipboard-action="copy" data-clipboard-target="div">Copy</button> <br /><br /> <script> <br /> var clipboard = new Clipboard('.btn'); <br /> clipboard.on('success', function(e) { <br /> console.info('Action:', e.action); <br /> console.info('Text:', e.text); <br /> console.info('Trigger:', e.trigger); <br /> e.clearSelection(); <br /> }); <br /> clipboard.on('error', function(e) { <br /> console.error('Action:', e.action); <br /> console.error('Trigger:', e.trigger); <br /> }); <br /><p> </script> </p><p><br /></p><p><br /></p><p>插件 clipboard.min.js <br /></p><p>/*!
* clipboard.js v1.7.1
* https://zenorocha.github.io/clipboard.js
*
* Licensed MIT © Zeno Rocha
*/
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Clipboard = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var DOCUMENT_NODE_TYPE = 9;
/**
* A polyfill for Element.matches()
*/
if (typeof Element !== 'undefined' && !Element.prototype.matches) {
var proto = Element.prototype;
proto.matches = proto.matchesSelector ||
proto.mozMatchesSelector ||
proto.msMatchesSelector ||
proto.oMatchesSelector ||
proto.webkitMatchesSelector;
}
/**
* Finds the closest parent that matches a selector.
*
* @param {Element} element
* @param {String} selector
* @return {Function}
*/
function closest (element, selector) {
while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {
if (typeof element.matches === 'function' &&
element.matches(selector)) {
return element;
}
element = element.parentNode;
}
}
module.exports = closest;
},{}],2:[function(require,module,exports){
var closest = require('./closest');
/**
* Delegates event to a selector.
*
* @param {Element} element
* @param {String} selector
* @param {String} type
* @param {Function} callback
* @param {Boolean} useCapture
* @return {Object}
*/
function delegate(element, selector, type, callback, useCapture) {
var listenerFn = listener.apply(this, arguments);
element.addEventListener(type, listenerFn, useCapture);
return {
destroy: function() {
element.removeEventListener(type, listenerFn, useCapture);
}
}
}
/**
* Finds closest match and invokes callback.
*
* @param {Element} element
* @param {String} selector
* @param {String} type
* @param {Function} callback
* @return {Function}
*/
function listener(element, selector, type, callback) {
return function(e) {
e.delegateTarget = closest(e.target, selector);
if (e.delegateTarget) {
callback.call(element, e);
}
}
}
module.exports = delegate;
},{"./closest":1}],3:[function(require,module,exports){
/**
* Check if argument is a HTML element.
*
* @param {Object} value
* @return {Boolean}
*/
exports.node = function(value) {
return value !== undefined
&& value instanceof HTMLElement
&& value.nodeType === 1;
};
/**
* Check if argument is a list of HTML elements.
*
* @param {Object} value
* @return {Boolean}
*/
exports.nodeList = function(value) {
var type = Object.prototype.toString.call(value);
return value !== undefined
&& (type === '[object NodeList]' || type === '[object HTMLCollection]')
&& ('length' in value)
&& (value.length === 0 || exports.node(value[0]));
};
/**
* Check if argument is a string.
*
* @param {Object} value
* @return {Boolean}
*/
exports.string = function(value) {
return typeof value === 'string'
|| value instanceof String;
};
/**
* Check if argument is a function.
*
* @param {Object} value
* @return {Boolean}
*/
exports.fn = function(value) {
var type = Object.prototype.toString.call(value);
return type === '[object Function]';
};
},{}],4:[function(require,module,exports){
var is = require('./is');
var delegate = require('delegate');
/**
* Validates all params and calls the right
* listener function based on its target type.
*
* @param {String|HTMLElement|HTMLCollection|NodeList} target
* @param {String} type
* @param {Function} callback
* @return {Object}
*/
function listen(target, type, callback) {
if (!target && !type && !callback) {
throw new Error('Missing required arguments');
}
if (!is.string(type)) {
throw new TypeError('Second argument must be a String');
}
if (!is.fn(callback)) {
throw new TypeError('Third argument must be a Function');
}
if (is.node(target)) {
return listenNode(target, type, callback);
}
else if (is.nodeList(target)) {
return listenNodeList(target, type, callback);
}
else if (is.string(target)) {
return listenSelector(target, type, callback);
}
else {
throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');
}
}
/**
* Adds an event listener to a HTML element
* and returns a remove listener function.
*
* @param {HTMLElement} node
* @param {String} type
* @param {Function} callback
* @return {Object}
*/
function listenNode(node, type, callback) {
node.addEventListener(type, callback);
return {
destroy: function() {
node.removeEventListener(type, callback);
}
}
}
/**
* Add an event listener to a list of HTML elements
* and returns a remove listener function.
*
* @param {NodeList|HTMLCollection} nodeList
* @param {String} type
* @param {Function} callback
* @return {Object}
*/
function listenNodeList(nodeList, type, callback) {
Array.prototype.forEach.call(nodeList, function(node) {
node.addEventListener(type, callback);
});
return {
destroy: function() {
Array.prototype.forEach.call(nodeList, function(node) {
node.removeEventListener(type, callback);
});
}
}
}
/**
* Add an event listener to a selector
* and returns a remove listener function.
*
* @param {String} selector
* @param {String} type
* @param {Function} callback
* @return {Object}
*/
function listenSelector(selector, type, callback) {
return delegate(document.body, selector, type, callback);
}
module.exports = listen;
},{"./is":3,"delegate":2}],5:[function(require,module,exports){
function select(element) {
var selectedText;
if (element.nodeName === 'SELECT') {
element.focus();
selectedText = element.value;
}
else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {
var isReadOnly = element.hasAttribute('readonly');
if (!isReadOnly) {
element.setAttribute('readonly', '');
}
element.select();
element.setSelectionRange(0, element.value.length);
if (!isReadOnly) {
element.removeAttribute('readonly');
}
selectedText = element.value;
}
else {
if (element.hasAttribute('contenteditable')) {
element.focus();
}
var selection = window.getSelection();
var range = document.createRange();
range.selectNodeContents(element);
selection.removeAllRanges();
selection.addRange(range);
selectedText = selection.toString();
}
return selectedText;
}
module.exports = select;
},{}],6:[function(require,module,exports){
function E () {
// Keep this empty so it's easier to inherit from
// (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)
}
E.prototype = {
on: function (name, callback, ctx) {
var e = this.e || (this.e = {});
(e[name] || (e[name] = [])).push({
fn: callback,
ctx: ctx
});
return this;
},
once: function (name, callback, ctx) {
var self = this;
function listener () {
self.off(name, listener);
callback.apply(ctx, arguments);
};
listener._ = callback
return this.on(name, listener, ctx);
},
emit: function (name) {
var data = [].slice.call(arguments, 1);
var evtArr = ((this.e || (this.e = {}))[name] || []).slice();
var i = 0;
var len = evtArr.length;
for (i; i < len; i++) {
evtArr[i].fn.apply(evtArr[i].ctx, data);
}
return this;
},
off: function (name, callback) {
var e = this.e || (this.e = {});
var evts = e[name];
var liveEvents = [];
if (evts && callback) {
for (var i = 0, len = evts.length; i < len; i++) {
if (evts[i].fn !== callback && evts[i].fn._ !== callback)
liveEvents.push(evts[i]);
}
}
// Remove event from queue to prevent memory leak
// Suggested by https://github.com/lazd
// Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910
(liveEvents.length)
? e[name] = liveEvents
: delete e[name];
return this;
}
};
module.exports = E;
},{}],7:[function(require,module,exports){
(function (global, factory) {
if (typeof define === "function" && define.amd) {
define(['module', 'select'], factory);
} else if (typeof exports !== "undefined") {
factory(module, require('select'));
} else {
var mod = {
exports: {}
};
factory(mod, global.select);
global.clipboardAction = mod.exports;
}
})(this, function (module, _select) {
'use strict';
var _select2 = _interopRequireDefault(_select);
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
var _createClass = function () {
function defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
return function (Constructor, protoProps, staticProps) {
if (protoProps) defineProperties(Constructor.prototype, protoProps);
if (staticProps) defineProperties(Constructor, staticProps);
return Constructor;
};
}();
var ClipboardAction = function () {
/**
* @param {Object} options
*/
function ClipboardAction(options) {
_classCallCheck(this, ClipboardAction);
this.resolveOptions(options);
this.initSelection();
}
/**
* Defines base properties passed from constructor.
* @param {Object} options
*/
_createClass(ClipboardAction, [{
key: 'resolveOptions',
value: function resolveOptions() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
this.action = options.action;
this.container = options.container;
this.emitter = options.emitter;
this.target = options.target;
this.text = options.text;
this.trigger = options.trigger;
this.selectedText = '';
}
}, {
key: 'initSelection',
value: function initSelection() {
if (this.text) {
this.selectFake();
} else if (this.target) {
this.selectTarget();
}
}
}, {
key: 'selectFake',
value: function selectFake() {
var _this = this;
var isRTL = document.documentElement.getAttribute('dir') == 'rtl';
this.removeFake();
this.fakeHandlerCallback = function () {
return _this.removeFake();
};
this.fakeHandler = this.container.addEventListener('click', this.fakeHandlerCallback) || true;
this.fakeElem = document.createElement('textarea');
// Prevent zooming on iOS
this.fakeElem.style.fontSize = '12pt';
// Reset box model
this.fakeElem.style.border = '0';
this.fakeElem.style.padding = '0';
this.fakeElem.style.margin = '0';
// Move element out of screen horizontally
this.fakeElem.style.position = 'absolute';
this.fakeElem.style[isRTL ? 'right' : 'left'] = '-9999px';
// Move element to the same position vertically
var yPosition = window.pageYOffset || document.documentElement.scrollTop;
this.fakeElem.style.top = yPosition + 'px';
this.fakeElem.setAttribute('readonly', '');
this.fakeElem.value = this.text;
this.container.appendChild(this.fakeElem);
this.selectedText = (0, _select2.default)(this.fakeElem);
this.copyText();
}
}, {
key: 'removeFake',
value: function removeFake() {
if (this.fakeHandler) {
this.container.removeEventListener('click', this.fakeHandlerCallback);
this.fakeHandler = null;
this.fakeHandlerCallback = null;
}
if (this.fakeElem) {
this.container.removeChild(this.fakeElem);
this.fakeElem = null;
}
}
}, {
key: 'selectTarget',
value: function selectTarget() {
this.selectedText = (0, _select2.default)(this.target);
this.copyText();
}
}, {
key: 'copyText',
value: function copyText() {
var succeeded = void 0;
try {
succeeded = document.execCommand(this.action);
} catch (err) {
succeeded = false;
}
this.handleResult(succeeded);
}
}, {
key: 'handleResult',
value: function handleResult(succeeded) {
this.emitter.emit(succeeded ? 'success' : 'error', {
action: this.action,
text: this.selectedText,
trigger: this.trigger,
clearSelection: this.clearSelection.bind(this)
});
}
}, {
key: 'clearSelection',
value: function clearSelection() {
if (this.trigger) {
this.trigger.focus();
}
window.getSelection().removeAllRanges();
}
}, {
key: 'destroy',
value: function destroy() {
this.removeFake();
}
}, {
key: 'action',
set: function set() {
var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'copy';
this._action = action;
if (this._action !== 'copy' && this._action !== 'cut') {
throw new Error('Invalid "action" value, use either "copy" or "cut"');
}
},
get: function get() {
return this._action;
}
}, {
key: 'target',
set: function set(target) {
if (target !== undefined) {
if (target && (typeof target === 'undefined' ? 'undefined' : _typeof(target)) === 'object' && target.nodeType === 1) {
if (this.action === 'copy' && target.hasAttribute('disabled')) {
throw new Error('Invalid "target" attribute. Please use "readonly" instead of "disabled" attribute');
}
if (this.action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {
throw new Error('Invalid "target" attribute. You can't cut text from elements with "readonly" or "disabled" attributes');
}
this._target = target;
} else {
throw new Error('Invalid "target" value, use a valid Element');
}
}
},
get: function get() {
return this._target;
}
}]);
return ClipboardAction;
}();
module.exports = ClipboardAction;
});
},{"select":5}],8:[function(require,module,exports){
(function (global, factory) {
if (typeof define === "function" && define.amd) {
define(['module', './clipboard-action', 'tiny-emitter', 'good-listener'], factory);
} else if (typeof exports !== "undefined") {
factory(module, require('./clipboard-action'), require('tiny-emitter'), require('good-listener'));
} else {
var mod = {
exports: {}
};
factory(mod, global.clipboardAction, global.tinyEmitter, global.goodListener);
global.clipboard = mod.exports;
}
})(this, function (module, _clipboardAction, _tinyEmitter, _goodListener) {
'use strict';
var _clipboardAction2 = _interopRequireDefault(_clipboardAction);
var _tinyEmitter2 = _interopRequireDefault(_tinyEmitter);
var _goodListener2 = _interopRequireDefault(_goodListener);
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
var _createClass = function () {
function defineProperties(target, props) {
for (var i = 0; i < props.length; i++) {
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
return function (Constructor, protoProps, staticProps) {
if (protoProps) defineProperties(Constructor.prototype, protoProps);
if (staticProps) defineProperties(Constructor, staticProps);
return Constructor;
};
}();
function _possibleConstructorReturn(self, call) {
if (!self) {
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
}
return call && (typeof call === "object" || typeof call === "function") ? call : self;
}
function _inherits(subClass, superClass) {
if (typeof superClass !== "function" && superClass !== null) {
throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
}
subClass.prototype = Object.create(superClass && superClass.prototype, {
constructor: {
value: subClass,
enumerable: false,
writable: true,
configurable: true
}
});
if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
}
var Clipboard = function (_Emitter) {
_inherits(Clipboard, _Emitter);
/**
* @param {String|HTMLElement|HTMLCollection|NodeList} trigger
* @param {Object} options
*/
function Clipboard(trigger, options) {
_classCallCheck(this, Clipboard);
var _this = _possibleConstructorReturn(this, (Clipboard.__proto__ || Object.getPrototypeOf(Clipboard)).call(this));
_this.resolveOptions(options);
_this.listenClick(trigger);
return _this;
}
/**
* Defines if attributes would be resolved using internal setter functions
* or custom functions that were passed in the constructor.
* @param {Object} options
*/
_createClass(Clipboard, [{
key: 'resolveOptions',
value: function resolveOptions() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
this.action = typeof options.action === 'function' ? options.action : this.defaultAction;
this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;
this.text = typeof options.text === 'function' ? options.text : this.defaultText;
this.container = _typeof(options.container) === 'object' ? options.container : document.body;
}
}, {
key: 'listenClick',
value: function listenClick(trigger) {
var _this2 = this;
this.listener = (0, _goodListener2.default)(trigger, 'click', function (e) {
return _this2.onClick(e);
});
}
}, {
key: 'onClick',
value: function onClick(e) {
var trigger = e.delegateTarget || e.currentTarget;
if (this.clipboardAction) {
this.clipboardAction = null;
}
this.clipboardAction = new _clipboardAction2.default({
action: this.action(trigger),
target: this.target(trigger),
text: this.text(trigger),
container: this.container,
trigger: trigger,
emitter: this
});
}
}, {
key: 'defaultAction',
value: function defaultAction(trigger) {
return getAttributeValue('action', trigger);
}
}, {
key: 'defaultTarget',
value: function defaultTarget(trigger) {
var selector = getAttributeValue('target', trigger);
if (selector) {
return document.querySelector(selector);
}
}
}, {
key: 'defaultText',
value: function defaultText(trigger) {
return getAttributeValue('text', trigger);
}
}, {
key: 'destroy',
value: function destroy() {
this.listener.destroy();
if (this.clipboardAction) {
this.clipboardAction.destroy();
this.clipboardAction = null;
}
}
}], [{
key: 'isSupported',
value: function isSupported() {
var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];
var actions = typeof action === 'string' ? [action] : action;
var support = !!document.queryCommandSupported;
actions.forEach(function (action) {
support = support && !!document.queryCommandSupported(action);
});
return support;
}
}]);
return Clipboard;
}(_tinyEmitter2.default);
/**
* Helper function to retrieve attribute value.
* @param {String} suffix
* @param {Element} element
*/
function getAttributeValue(suffix, element) {
var attribute = 'data-clipboard-' + suffix;
if (!element.hasAttribute(attribute)) {
return;
}
return element.getAttribute(attribute);
}
module.exports = Clipboard;
});
},{"./clipboard-action":7,"good-listener":4,"tiny-emitter":6}]},{},[8])(8)
});<br /></p>
正文结束 |
| js 正则替换返回值做回调函数 | jquery3.2.1 对load事件的改版引起的bug |