首先说明一下写这个的原因,现在不管是什么类型的网站,不管你访问的是什么类型的网址,进去以后你想要保存一些东西很简单,直接右键选择复制就可以了,这个是Windows自带的功能(快捷键 ctrl+c/ctrl+v,不做赘述),那么windows提供了那么好的功能,我们为什么还要做一个复制的操作呢?很简单有的时候访问网站的人不会这个操作,但是认识字,你可以给他提供一个复制的按钮,然后复制text输入的内容就可以了,这个他是会操作的,ok废话不说,简单的说明一些怎么实现。
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>target-input</title> </head> <body> <!-- 画一个简单的text框何一个简单的按钮测试效果 --> <input id="foo" type="text" value="hello"> <button class="btn" data-clipboard-action="copy" data-clipboard-target="#foo">Copy</button> <script src="js/clipboard.min.js"></script> <script> var clipboard = new Clipboard('.btn'); clipboard.on('success', function(e) { console.log("ok"); }); clipboard.on('error', function(e) { console.log("false"); }); </script> </body> </html>
这里是用到的js(clipboard.min.js),可以直接复制或者是自己写一个js也可以(也就是不管是外部引用还是直接引用都是没问题的)
! function(t) { if ("object" == typeof exports && "undefined" != typeof module) module.exports = t(); else if ("function" == typeof define && define.amd) define([], t); else { var e; e = "undefined" != typeof window ? window: "undefined" != typeof global ? global: "undefined" != typeof self ? self: this, e.Clipboard = t() } } (function() { var t, e, n; return function t(e, n, o) { function i(a, c) { if (!n[a]) { if (!e[a]) { var l = "function" == typeof require && require; if (!c && l) return l(a, !0); if (r) return r(a, !0); var s = new Error("Cannot find module '" + a + "'"); throw s.code = "MODULE_NOT_FOUND", s } var u = n[a] = { exports: {} }; e[a][0].call(u.exports, function(t) { var n = e[a][1][t]; return i(n || t) }, u, u.exports, t, e, n, o) } return n[a].exports } for (var r = "function" == typeof require && require, a = 0; a < o.length; a++) i(o[a]); return i } ({ 1 : [function(t, e, n) { function o(t, e) { for (; t && t.nodeType !== i;) { if ("function" == typeof t.matches && t.matches(e)) return t; t = t.parentNode } } var i = 9; if ("undefined" != typeof Element && !Element.prototype.matches) { var r = Element.prototype; r.matches = r.matchesSelector || r.mozMatchesSelector || r.msMatchesSelector || r.oMatchesSelector || r.webkitMatchesSelector } e.exports = o }, {}], 2 : [function(t, e, n) { function o(t, e, n, o, r) { var a = i.apply(this, arguments); return t.addEventListener(n, a, r), { destroy: function() { t.removeEventListener(n, a, r) } } } function i(t, e, n, o) { return function(n) { n.delegateTarget = r(n.target, e), n.delegateTarget && o.call(t, n) } } var r = t("./closest"); e.exports = o }, { "./closest": 1 }], 3 : [function(t, e, n) { n.node = function(t) { return void 0 !== t && t instanceof HTMLElement && 1 === t.nodeType }, n.nodeList = function(t) { var e = Object.prototype.toString.call(t); return void 0 !== t && ("[object NodeList]" === e || "[object HTMLCollection]" === e) && "length" in t && (0 === t.length || n.node(t[0])) }, n.string = function(t) { return "string" == typeof t || t instanceof String }, n.fn = function(t) { return "[object Function]" === Object.prototype.toString.call(t) } }, {}], 4 : [function(t, e, n) { function o(t, e, n) { if (!t && !e && !n) throw new Error("Missing required arguments"); if (!c.string(e)) throw new TypeError("Second argument must be a String"); if (!c.fn(n)) throw new TypeError("Third argument must be a Function"); if (c.node(t)) return i(t, e, n); if (c.nodeList(t)) return r(t, e, n); if (c.string(t)) return a(t, e, n); throw new TypeError("First argument must be a String, HTMLElement, HTMLCollection, or NodeList") } function i(t, e, n) { return t.addEventListener(e, n), { destroy: function() { t.removeEventListener(e, n) } } } function r(t, e, n) { return Array.prototype.forEach.call(t, function(t) { t.addEventListener(e, n) }), { destroy: function() { Array.prototype.forEach.call(t, function(t) { t.removeEventListener(e, n) }) } } } function a(t, e, n) { return l(document.body, t, e, n) } var c = t("./is"), l = t("delegate"); e.exports = o }, { "./is": 3, delegate: 2 }], 5 : [function(t, e, n) { function o(t) { var e; if ("SELECT" === t.nodeName) t.focus(), e = t.value; else if ("INPUT" === t.nodeName || "TEXTAREA" === t.nodeName) { var n = t.hasAttribute("readonly"); n || t.setAttribute("readonly", ""), t.select(), t.setSelectionRange(0, t.value.length), n || t.removeAttribute("readonly"), e = t.value } else { t.hasAttribute("contenteditable") && t.focus(); var o = window.getSelection(), i = document.createRange(); i.selectNodeContents(t), o.removeAllRanges(), o.addRange(i), e = o.toString() } return e } e.exports = o }, {}], 6 : [function(t, e, n) { function o() {} o.prototype = { on: function(t, e, n) { var o = this.e || (this.e = {}); return (o[t] || (o[t] = [])).push({ fn: e, ctx: n }), this }, once: function(t, e, n) { function o() { i.off(t, o), e.apply(n, arguments) } var i = this; return o._ = e, this.on(t, o, n) }, emit: function(t) { var e = [].slice.call(arguments, 1), n = ((this.e || (this.e = {}))[t] || []).slice(), o = 0, i = n.length; for (o; o < i; o++) n[o].fn.apply(n[o].ctx, e); return this }, off: function(t, e) { var n = this.e || (this.e = {}), o = n[t], i = []; if (o && e) for (var r = 0, a = o.length; r < a; r++) o[r].fn !== e && o[r].fn._ !== e && i.push(o[r]); return i.length ? n[t] = i: delete n[t], this } }, e.exports = o }, {}], 7 : [function(e, n, o) { ! function(i, r) { if ("function" == typeof t && t.amd) t(["module", "select"], r); else if (void 0 !== o) r(n, e("select")); else { var a = { exports: {} }; r(a, i.select), i.clipboardAction = a.exports } } (this, function(t, e) { "use strict"; function n(t) { return t && t.__esModule ? t: { default: t } } function o(t, e) { if (! (t instanceof e)) throw new TypeError("Cannot call a class as a function") } var i = n(e), r = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function(t) { return typeof t }: function(t) { return t && "function" == typeof Symbol && t.constructor === Symbol && t !== Symbol.prototype ? "symbol": typeof t }, a = function() { function t(t, e) { for (var n = 0; n < e.length; n++) { var o = e[n]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(t, o.key, o) } } return function(e, n, o) { return n && t(e.prototype, n), o && t(e, o), e } } (), c = function() { function t(e) { o(this, t), this.resolveOptions(e), this.initSelection() } return a(t, [{ key: "resolveOptions", value: function t() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}; this.action = e.action, this.container = e.container, this.emitter = e.emitter, this.target = e.target, this.text = e.text, this.trigger = e.trigger, this.selectedText = "" } }, { key: "initSelection", value: function t() { this.text ? this.selectFake() : this.target && this.selectTarget() } }, { key: "selectFake", value: function t() { var e = this, n = "rtl" == document.documentElement.getAttribute("dir"); this.removeFake(), this.fakeHandlerCallback = function() { return e.removeFake() }, this.fakeHandler = this.container.addEventListener("click", this.fakeHandlerCallback) || !0, this.fakeElem = document.createElement("textarea"), this.fakeElem.style.fontSize = "12pt", this.fakeElem.style.border = "0", this.fakeElem.style.padding = "0", this.fakeElem.style.margin = "0", this.fakeElem.style.position = "absolute", this.fakeElem.style[n ? "right": "left"] = "-9999px"; var o = window.pageYOffset || document.documentElement.scrollTop; this.fakeElem.style.top = o + "px", this.fakeElem.setAttribute("readonly", ""), this.fakeElem.value = this.text, this.container.appendChild(this.fakeElem), this.selectedText = (0, i. default)(this.fakeElem), this.copyText() } }, { key: "removeFake", value: function t() { this.fakeHandler && (this.container.removeEventListener("click", this.fakeHandlerCallback), this.fakeHandler = null, this.fakeHandlerCallback = null), this.fakeElem && (this.container.removeChild(this.fakeElem), this.fakeElem = null) } }, { key: "selectTarget", value: function t() { this.selectedText = (0, i. default)(this.target), this.copyText() } }, { key: "copyText", value: function t() { var e = void 0; try { e = document.execCommand(this.action) } catch(t) { e = !1 } this.handleResult(e) } }, { key: "handleResult", value: function t(e) { this.emitter.emit(e ? "success": "error", { action: this.action, text: this.selectedText, trigger: this.trigger, clearSelection: this.clearSelection.bind(this) }) } }, { key: "clearSelection", value: function t() { this.trigger && this.trigger.focus(), window.getSelection().removeAllRanges() } }, { key: "destroy", value: function t() { this.removeFake() } }, { key: "action", set: function t() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : "copy"; if (this._action = e, "copy" !== this._action && "cut" !== this._action) throw new Error('Invalid "action" value, use either "copy" or "cut"') }, get: function t() { return this._action } }, { key: "target", set: function t(e) { if (void 0 !== e) { if (!e || "object" !== (void 0 === e ? "undefined": r(e)) || 1 !== e.nodeType) throw new Error('Invalid "target" value, use a valid Element'); if ("copy" === this.action && e.hasAttribute("disabled")) throw new Error('Invalid "target" attribute. Please use "readonly" instead of "disabled" attribute'); if ("cut" === this.action && (e.hasAttribute("readonly") || e.hasAttribute("disabled"))) throw new Error('Invalid "target" attribute. You can\'t cut text from elements with "readonly" or "disabled" attributes'); this._target = e } }, get: function t() { return this._target } }]), t } (); t.exports = c }) }, { select: 5 }], 8 : [function(e, n, o) { ! function(i, r) { if ("function" == typeof t && t.amd) t(["module", "./clipboard-action", "tiny-emitter", "good-listener"], r); else if (void 0 !== o) r(n, e("./clipboard-action"), e("tiny-emitter"), e("good-listener")); else { var a = { exports: {} }; r(a, i.clipboardAction, i.tinyEmitter, i.goodListener), i.clipboard = a.exports } } (this, function(t, e, n, o) { "use strict"; function i(t) { return t && t.__esModule ? t: { default: t } } function r(t, e) { if (! (t instanceof e)) throw new TypeError("Cannot call a class as a function") } function a(t, e) { if (!t) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return ! e || "object" != typeof e && "function" != typeof e ? t: e } function c(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function, not " + typeof e); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, enumerable: !1, writable: !0, configurable: !0 } }), e && (Object.setPrototypeOf ? Object.setPrototypeOf(t, e) : t.__proto__ = e) } function l(t, e) { var n = "data-clipboard-" + t; if (e.hasAttribute(n)) return e.getAttribute(n) } var s = i(e), u = i(n), f = i(o), d = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function(t) { return typeof t }: function(t) { return t && "function" == typeof Symbol && t.constructor === Symbol && t !== Symbol.prototype ? "symbol": typeof t }, h = function() { function t(t, e) { for (var n = 0; n < e.length; n++) { var o = e[n]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(t, o.key, o) } } return function(e, n, o) { return n && t(e.prototype, n), o && t(e, o), e } } (), p = function(t) { function e(t, n) { r(this, e); var o = a(this, (e.__proto__ || Object.getPrototypeOf(e)).call(this)); return o.resolveOptions(n), o.listenClick(t), o } return c(e, t), h(e, [{ key: "resolveOptions", value: function t() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : {}; this.action = "function" == typeof e.action ? e.action: this.defaultAction, this.target = "function" == typeof e.target ? e.target: this.defaultTarget, this.text = "function" == typeof e.text ? e.text: this.defaultText, this.container = "object" === d(e.container) ? e.container: document.body } }, { key: "listenClick", value: function t(e) { var n = this; this.listener = (0, f. default)(e, "click", function(t) { return n.onClick(t) }) } }, { key: "onClick", value: function t(e) { var n = e.delegateTarget || e.currentTarget; this.clipboardAction && (this.clipboardAction = null), this.clipboardAction = new s. default({ action: this.action(n), target: this.target(n), text: this.text(n), container: this.container, trigger: n, emitter: this }) } }, { key: "defaultAction", value: function t(e) { return l("action", e) } }, { key: "defaultTarget", value: function t(e) { var n = l("target", e); if (n) return document.querySelector(n) } }, { key: "defaultText", value: function t(e) { return l("text", e) } }, { key: "destroy", value: function t() { this.listener.destroy(), this.clipboardAction && (this.clipboardAction.destroy(), this.clipboardAction = null) } }], [{ key: "isSupported", value: function t() { var e = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : ["copy", "cut"], n = "string" == typeof e ? [e] : e, o = !!document.queryCommandSupported; return n.forEach(function(t) { o = o && !!document.queryCommandSupported(t) }), o } }]), e } (u. default); t.exports = p }) }, { "./clipboard-action": 7, "good-listener": 4, "tiny-emitter": 6 }] }, {}, [8])(8) });
效果图