自动保存表单数据
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.org/scripts/454871/1117300/jqueryformLocalStorage.js
/*!
* jQuery Form Local Storage Plugin v0.1
* http://git.oschina.net/since1986/jquery_form_local_storage
*
* Copyright since1986
* Released under the MIT license
*/
(function($) {
$.fn.formLocalStorage = function(options) {
var form_selector = this.selector;
var input_selector = form_selector + " :text, " + form_selector + " :checkbox, " + form_selector + " :radio, " + form_selector + " select, " + form_selector + " textarea, " + form_selector + " [type='date']";
if(options.debug){ console.debug(this); }
//插件选项
var options = $.extend({
storage_name_perfix : ( this.context.URL + form_selector + "@" ), //暂存的命名前缀
storage_dom_css : {"font-style":"oblique"}, //暂存内容的css(用于区分原始内容与暂存内容)
load_ready_callback : function(){}, //暂存内容加载完毕回调
save_ready_callback : function(){}, //暂存内容保存完毕回调
remove_ready_callback : function(){}, //暂存内容删除完毕回调
debug : false, //调试模式
},
options || {});
if(options.debug){ console.debug("storage_name_perfix: " + options.storage_name_perfix); }
//表单加载完毕后从localStorage中载入暂存的表单内容
this.ready(function(){
var storage_count = 0;
$(input_selector).each(function(){
var storage_key = options.storage_name_perfix + this.name;
var storage_value = localStorage.getItem(storage_key);
if(storage_value != undefined && storage_value != null){
$(this).val(storage_value);
$(this).css(options.storage_dom_css);
if(options.debug){ console.debug("Load from localStorage [" + storage_key + " : " + storage_value + "]"); };
storage_count++;
}
});
if(storage_count > 0) { options.load_ready_callback(); }
});
//监控表单内容变化并存入localStorage FIXME 动态写入的内容监控不到
this.ready(function(){
$(input_selector).change(function(){
if(this.value != undefined && this.value != null){
var storage_key = options.storage_name_perfix + this.name;
var storage_value = this.value;
localStorage.setItem(storage_key, storage_value);
$(this).css(options.storage_dom_css);
if(options.debug){ console.debug("Save to localStorage [" + storage_key + " : " + storage_value + "]"); };
}
options.save_ready_callback();
});
});
//表单提交时自动清空此表单所有暂存内容
this.submit(function(){
$(input_selector).each(function(){
var storage_key = options.storage_name_perfix + this.name;
localStorage.removeItem(storage_key);
if(options.debug){ console.debug("Remove from localStorage [" + storage_key + "]"); };
});
options.remove_ready_callback();
});
return this;
};
})(jQuery);