Created
December 17, 2013 06:36
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フォーカスがあたるとリセットされるinput。何もいじらなければ、直前の内容が保持される。 coffeeと、コンパイル後のjs両方を添付。
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>aaaa</title> | |
| <link rel="stylesheet" href="./css/main.css" type="text/css" media="screen" charset="utf-8"> | |
| </head> | |
| <body> | |
| <input type="text" class="reset_onfocus" placeholder="aaaaaaaaa"> | |
| <input type="text" class="reset_onfocus" placeholder="aaaaaaaab"> | |
| <input type="text" class="reset_onfocus" placeholder="aaaaaaaac"> | |
| <script src="./main.js" charset="utf-8"></script> | |
| </body> | |
| </html> |
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| 'use strict' | |
| CLS_RESET = 'reset_onfocus' | |
| # for IE | |
| extract_target = (event) -> event.target or event.srcElement | |
| reset_texts = (e) -> | |
| self = extract_target(e) | |
| if self.value == '' | |
| return | |
| value_holder = self.value | |
| edited = false | |
| self.value = '' | |
| edit_detector = (_e) -> edited = true | |
| settle_out = (_e) -> | |
| _self = extract_target(_e) | |
| if not edited | |
| _self.value = value_holder | |
| self.removeEventListener('change', edit_detector) | |
| self.removeEventListener('blur', settle_out) | |
| self.addEventListener('change', edit_detector) | |
| self.addEventListener('blur', settle_out) | |
| resetable_inputes = document.getElementsByClassName(CLS_RESET) | |
| for inp in resetable_inputes | |
| inp.addEventListener('focus', reset_texts) |
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| // Generated by CoffeeScript 1.6.3 | |
| (function() { | |
| 'use strict'; | |
| var CLS_RESET, extract_target, inp, reset_texts, resetable_inputes, _i, _len; | |
| CLS_RESET = 'reset_onfocus'; | |
| extract_target = function(event) { | |
| return event.target || event.srcElement; | |
| }; | |
| reset_texts = function(e) { | |
| var edit_detector, edited, self, settle_out, value_holder; | |
| self = extract_target(e); | |
| if (self.value === '') { | |
| return; | |
| } | |
| value_holder = self.value; | |
| edited = false; | |
| self.value = ''; | |
| edit_detector = function(_e) { | |
| return edited = true; | |
| }; | |
| settle_out = function(_e) { | |
| var _self; | |
| _self = extract_target(_e); | |
| if (!edited) { | |
| _self.value = value_holder; | |
| } | |
| self.removeEventListener('change', edit_detector); | |
| return self.removeEventListener('blur', settle_out); | |
| }; | |
| self.addEventListener('change', edit_detector); | |
| return self.addEventListener('blur', settle_out); | |
| }; | |
| resetable_inputes = document.getElementsByClassName(CLS_RESET); | |
| for (_i = 0, _len = resetable_inputes.length; _i < _len; _i++) { | |
| inp = resetable_inputes[_i]; | |
| inp.addEventListener('focus', reset_texts); | |
| } | |
| }).call(this); |
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