Created
April 18, 2012 13:59
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JavaScript > pattern > cross browser event listener (JavaScriptパターン p194)
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| <html> | |
| <body> | |
| <p><button id="foo">Click</button></p> | |
| </body> | |
| </html> |
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| var utils = { | |
| addListener: null, | |
| removeListener: null | |
| }; | |
| if (typeof window.addEventListener === 'function') { | |
| utils.addListener = function(elem, type, fn) { | |
| elem.addEventListener(type, fn, false); | |
| }; | |
| utils.removeListener = function(elem, type, fn) { | |
| elem.removeElementListener(type, fn, false); | |
| }; | |
| } else if (typeof document.attachEvent === 'function') { | |
| utils.addListener = function(elem, type, fn) { | |
| elem.addEvent('on' + type, fn); | |
| }; | |
| utils.removeListener = function(elem, type, fn) { | |
| elem.deleteListener('on' + type, fn); | |
| }; | |
| } else { // 最終手段 | |
| utils.addListener = function(elem, type, fn) { | |
| elem['on' + type] = fn; | |
| }; | |
| utils.removeListener = function(elem, type, fn) { | |
| elem['on' + type] = null; | |
| }; | |
| } | |
| // 実行例 | |
| var elem = document.getElementById('foo'); | |
| utils.addListener(elem, 'click', function () { | |
| alert('foo'); | |
| }); |
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