diff --git a/classList.js b/classList.js index 0693237..e5edce8 100644 --- a/classList.js +++ b/classList.js @@ -1,6 +1,6 @@ /* * classList.js: Cross-browser full element.classList implementation. - * 1.1.20150312 + * 1.1.20160404 * * By Eli Grey, http://eligrey.com * License: Dedicated to the public domain. @@ -12,229 +12,244 @@ /*! @source http://purl.eligrey.com/github/classList.js/blob/master/classList.js */ if ("document" in self) { + (function() { + "use strict"; + + var setPropOnDOM = true; + + // Detect if we can define properties on DOM Objects + try { + Object.defineProperty(document.createElement("_"), "classList", { + "get": function() { + } + }); + } catch (e) { //Old Safari versions will break at this point + setPropOnDOM = false; + } // Full polyfill for browsers with no classList support // Including IE < Edge missing SVGElement.classList -if (!("classList" in document.createElement("_")) - || document.createElementNS && !("classList" in document.createElementNS("http://www.w3.org/2000/svg","g"))) { - -(function (view) { - -"use strict"; - -if (!('Element' in view)) return; - -var - classListProp = "classList" - , protoProp = "prototype" - , elemCtrProto = view.Element[protoProp] - , objCtr = Object - , strTrim = String[protoProp].trim || function () { - return this.replace(/^\s+|\s+$/g, ""); - } - , arrIndexOf = Array[protoProp].indexOf || function (item) { - var - i = 0 - , len = this.length - ; - for (; i < len; i++) { - if (i in this && this[i] === item) { - return i; - } - } - return -1; - } - // Vendors: please allow content code to instantiate DOMExceptions - , DOMEx = function (type, message) { - this.name = type; - this.code = DOMException[type]; - this.message = message; - } - , checkTokenAndGetIndex = function (classList, token) { - if (token === "") { - throw new DOMEx( - "SYNTAX_ERR" - , "An invalid or illegal string was specified" - ); - } - if (/\s/.test(token)) { - throw new DOMEx( - "INVALID_CHARACTER_ERR" - , "String contains an invalid character" - ); - } - return arrIndexOf.call(classList, token); - } - , ClassList = function (elem) { - var - trimmedClasses = strTrim.call(elem.getAttribute("class") || "") - , classes = trimmedClasses ? trimmedClasses.split(/\s+/) : [] - , i = 0 - , len = classes.length - ; - for (; i < len; i++) { - this.push(classes[i]); - } - this._updateClassName = function () { - elem.setAttribute("class", this.toString()); - }; - } - , classListProto = ClassList[protoProp] = [] - , classListGetter = function () { - return new ClassList(this); - } -; + if (setPropOnDOM && (!("classList" in document.createElement("_")) || document.createElementNS && !("classList" in document.createElementNS("http://www.w3.org/2000/svg", "g")))) { + + (function(view) { + + "use strict"; + + if (!('Element' in view)) return; + + var + classListProp = "classList" + , protoProp = "prototype" + , elemCtrProto = view.Element[protoProp] + , objCtr = Object + , strTrim = String[protoProp].trim || function() { + return this.replace(/^\s+|\s+$/g, ""); + } + , arrIndexOf = Array[protoProp].indexOf || function(item) { + var + i = 0 + , len = this.length + ; + for (; i < len; i++) { + if (i in this && this[i] === item) { + return i; + } + } + return -1; + } + // Vendors: please allow content code to instantiate DOMExceptions + , DOMEx = function(type, message) { + this.name = type; + this.code = DOMException[type]; + this.message = message; + } + , checkTokenAndGetIndex = function(classList, token) { + if (token === "") { + throw new DOMEx( + "SYNTAX_ERR" + , "An invalid or illegal string was specified" + ); + } + if (/\s/.test(token)) { + throw new DOMEx( + "INVALID_CHARACTER_ERR" + , "String contains an invalid character" + ); + } + return arrIndexOf.call(classList, token); + } + , ClassList = function(elem) { + var + trimmedClasses = strTrim.call(elem.getAttribute("class") || "") + , classes = trimmedClasses ? trimmedClasses.split(/\s+/) : [] + , i = 0 + , len = classes.length + ; + for (; i < len; i++) { + this.push(classes[i]); + } + this._updateClassName = function() { + elem.setAttribute("class", this.toString()); + }; + } + , classListProto = ClassList[protoProp] = [] + , classListGetter = function() { + return new ClassList(this); + } + ; // Most DOMException implementations don't allow calling DOMException's toString() // on non-DOMExceptions. Error's toString() is sufficient here. -DOMEx[protoProp] = Error[protoProp]; -classListProto.item = function (i) { - return this[i] || null; -}; -classListProto.contains = function (token) { - token += ""; - return checkTokenAndGetIndex(this, token) !== -1; -}; -classListProto.add = function () { - var - tokens = arguments - , i = 0 - , l = tokens.length - , token - , updated = false - ; - do { - token = tokens[i] + ""; - if (checkTokenAndGetIndex(this, token) === -1) { - this.push(token); - updated = true; - } - } - while (++i < l); - - if (updated) { - this._updateClassName(); - } -}; -classListProto.remove = function () { - var - tokens = arguments - , i = 0 - , l = tokens.length - , token - , updated = false - , index - ; - do { - token = tokens[i] + ""; - index = checkTokenAndGetIndex(this, token); - while (index !== -1) { - this.splice(index, 1); - updated = true; - index = checkTokenAndGetIndex(this, token); - } - } - while (++i < l); - - if (updated) { - this._updateClassName(); - } -}; -classListProto.toggle = function (token, force) { - token += ""; - - var - result = this.contains(token) - , method = result ? - force !== true && "remove" - : - force !== false && "add" - ; - - if (method) { - this[method](token); - } - - if (force === true || force === false) { - return force; - } else { - return !result; - } -}; -classListProto.toString = function () { - return this.join(" "); -}; - -if (objCtr.defineProperty) { - var classListPropDesc = { - get: classListGetter - , enumerable: true - , configurable: true - }; - try { - objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc); - } catch (ex) { // IE 8 doesn't support enumerable:true - if (ex.number === -0x7FF5EC54) { - classListPropDesc.enumerable = false; - objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc); - } - } -} else if (objCtr[protoProp].__defineGetter__) { - elemCtrProto.__defineGetter__(classListProp, classListGetter); -} - -}(self)); - -} else { + DOMEx[protoProp] = Error[protoProp]; + classListProto.item = function(i) { + return this[i] || null; + }; + classListProto.contains = function(token) { + token += ""; + return checkTokenAndGetIndex(this, token) !== -1; + }; + classListProto.add = function() { + var + tokens = arguments + , i = 0 + , l = tokens.length + , token + , updated = false + ; + do { + token = tokens[i] + ""; + if (checkTokenAndGetIndex(this, token) === -1) { + this.push(token); + updated = true; + } + } + while (++i < l); + + if (updated) { + this._updateClassName(); + } + }; + classListProto.remove = function() { + var + tokens = arguments + , i = 0 + , l = tokens.length + , token + , updated = false + , index + ; + do { + token = tokens[i] + ""; + index = checkTokenAndGetIndex(this, token); + while (index !== -1) { + this.splice(index, 1); + updated = true; + index = checkTokenAndGetIndex(this, token); + } + } + while (++i < l); + + if (updated) { + this._updateClassName(); + } + }; + classListProto.toggle = function(token, force) { + token += ""; + + var + result = this.contains(token) + , method = result ? + force !== true && "remove" + : + force !== false && "add" + ; + + if (method) { + this[method](token); + } + + if (force === true || force === false) { + return force; + } else { + return !result; + } + }; + classListProto.toString = function() { + return this.join(" "); + }; + + if (objCtr.defineProperty) { + var classListPropDesc = { + get: classListGetter + , enumerable: true + , configurable: true + }; + try { + objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc); + } catch (ex) { // IE 8 doesn't support enumerable:true + if (ex.number === -0x7FF5EC54) { + classListPropDesc.enumerable = false; + objCtr.defineProperty(elemCtrProto, classListProp, classListPropDesc); + } + } + } else if (objCtr[protoProp].__defineGetter__) { + elemCtrProto.__defineGetter__(classListProp, classListGetter); + } + + }(self)); + + } else { // There is full or partial native classList support, so just check if we need // to normalize the add/remove and toggle APIs. -(function () { - "use strict"; - - var testElement = document.createElement("_"); + (function() { + "use strict"; - testElement.classList.add("c1", "c2"); + var testElement = document.createElement("_"); - // Polyfill for IE 10/11 and Firefox <26, where classList.add and - // classList.remove exist but support only one argument at a time. - if (!testElement.classList.contains("c2")) { - var createMethod = function(method) { - var original = DOMTokenList.prototype[method]; + if (!!("classList" in testElement)) { - DOMTokenList.prototype[method] = function(token) { - var i, len = arguments.length; + testElement.classList.add("c1", "c2"); - for (i = 0; i < len; i++) { - token = arguments[i]; - original.call(this, token); - } - }; - }; - createMethod('add'); - createMethod('remove'); - } + // Polyfill for IE 10/11 and Firefox <26, where classList.add and + // classList.remove exist but support only one argument at a time. + if (!testElement.classList.contains("c2")) { + var createMethod = function(method) { + var original = DOMTokenList.prototype[method]; - testElement.classList.toggle("c3", false); + DOMTokenList.prototype[method] = function(token) { + var i, len = arguments.length; - // Polyfill for IE 10 and Firefox <24, where classList.toggle does not - // support the second argument. - if (testElement.classList.contains("c3")) { - var _toggle = DOMTokenList.prototype.toggle; + for (i = 0; i < len; i++) { + token = arguments[i]; + original.call(this, token); + } + }; + }; + createMethod('add'); + createMethod('remove'); + } - DOMTokenList.prototype.toggle = function(token, force) { - if (1 in arguments && !this.contains(token) === !force) { - return force; - } else { - return _toggle.call(this, token); - } - }; + testElement.classList.toggle("c3", false); - } + // Polyfill for IE 10 and Firefox <24, where classList.toggle does not + // support the second argument. + if (testElement.classList.contains("c3")) { + var _toggle = DOMTokenList.prototype.toggle; - testElement = null; -}()); + DOMTokenList.prototype.toggle = function(token, force) { + if (1 in arguments && !this.contains(token) === !force) { + return force; + } else { + return _toggle.call(this, token); + } + }; -} + } + testElement = null; + } + }()); + } + })(); }