導讀:上次寫了一篇關於GridView的插件開發方法,上幾天因爲工做須要,花了一天左右的事件封裝了popupLayer(彈出層)插件。今天有時間就記錄一下本身的開發思想與你們分享下,同時也算是對這段時間的工做概要吧。css
就我在開發過程當中的理解和開發的經驗,通常經常使用的彈出層有三類(其實還有一類就是彈出能夠輸入內容的,可是這種能夠被替代,因此就特別拿出來寫了):Confirm、Alert、LoadContent(url)。其中Alert又能夠分紅五種(固然也能夠是四種),分別是: "error"、"info"、"question"、"warning"、"alert" 。對於每一個名詞我就不一一介紹了,相信你們對這幾個名詞也都不陌生。若是實在瞭解,能夠看下easy ui中的說明。由於不少彈出插件就是相似這樣的命名,這樣既爲了便於他人理解,也便於和主流相一致吧(算是一種「規範」命名吧)。
html
也扯不少了,下面開始真正的開發環節:ajax
仍是我上次說過的,開發插件首先要對這個插件有必定的瞭解。知道它須要什麼樣的功能,是用來作什麼的。這也算是「需求分析」吧。雖然彈出層算是你們得常識吧,也要對其中的做用在進行一次邏輯分析。分析的好處在於你能夠提煉這些彈出層的異同點。說到這裏我想你們都瞭解了這是爲何了,對,就是要將共同點封裝起來。緩存
這幾個彈出層的共同點不少,例如:彈出的樣式、彈出的位置、彈出的方式等等。。。這些均可以封裝起來。固然他們的不一樣點也很容易看出來,例如:加載的按鈕可能不同(Alert通常只有肯定按鈕,Confirm通常都是兩個按鈕,也能夠是一個)、警告的圖標不一樣等等。。。這些都是不一樣的地方。固然不一樣時相對的。咱們也是能夠進一個提煉的。app
先說下開發步驟吧:ide
第一步:「需求分析」,也就是我上面說的那些。肯定各類彈出層的異同點。oop
第二步:封裝共同點測試
第三步:特殊處理,也就是不一樣點的處理。(建議寫代碼的時候分開點,不要全部邏輯都寫到一塊兒)ui
第四步:整合代碼,實現功能。(就是經過本身封裝的東西,得到想要的效果)this
第五步:擴展性問題。這個是我最想強調的。不少人開發的眼光太太短淺(這裏不是特指誰,由於我之前也常犯這種問題),開發的插件(或是寫的代碼),不具備重用性。例如我開發這個的時候就出現了,插件開發完成了,單個測試都很好,沒問題。可是同時(或前後)彈出多個層就出問題了,這就是由於當時寫代碼時候,把一些變量寫的太死,致使不能夠擴展了。同時彈出來那個層的ID相同了。。。。。。這樣悲劇的事情想必不少人都會遇到,之前也用過私人寫的第三方插件出現相似的問題。其實出現這樣問題歸根究底仍是需求分析沒作好。
第六步:測試。測試時很重要的環節,不少錯誤狀況都是測試出來的。因此不要吝惜那點測試的時間。好的插件(代碼)是測出來的。
因爲篇幅受限只能貼出部分代碼以下:
(function () {
//說明:alert彈出 五種狀態 "error"、"info"、"question"、"warning"、"alert"
var popupEnumType = {
Error: 1,
Info: 2,
Question: 3,
Warning: 4,
Alert: 5
};
//說明:顯示button的類型
var popupEnumBtn = {
SureAndCancel: 1,
SureOnly: 2,
CancelOnly: 3
};
var popupCommon = {
//獲取 Confirm 基礎元素
getBasicElements_Confirm: function (content, isShowIcon) {
var htmlStr = "";
htmlStr += "<div class='cancel_dingdai_tixing'> <dl class='f-oh'>";
if (isShowIcon) {
htmlStr += "<dd class='f-fl infoIcon'></dd>";
}
htmlStr += "<dd class='f-fl cancel_dingdai_text cancel_dingdai_text_content'>" + content + "</dd>" +
" </dl>" +
" </div>";
return htmlStr;
},
//獲取 Alert 基礎元素
getBasicElements_Alert: function (popupType, content) {
var htmlStr = "";
htmlStr += "<div class='cancel_dingdai_tixing'> <dl class='f-oh'>";
htmlStr += "<dd class='f-fl ";
switch (popupType) {
case popupEnumType.Error:
htmlStr += "errorIcon";
break;
case popupEnumType.Info:
htmlStr += "infoIcon";
break;
case popupEnumType.Question:
htmlStr += "questionIcon";
break;
case popupEnumType.Warning:
htmlStr += "warningIcon";
break;
case popupEnumType.Alert:
htmlStr += "";
break;
}
htmlStr += "'></dd>";
htmlStr += " <dd class='f-fl cancel_dingdai_text cancel_dingdai_text_content'>" + content + "</dd>" +
" </dl>" +
" </div>";
return htmlStr;
},
//得到要顯示的彈出層
getPopupLayerHtml: function (title, boxstyle, contentHtml, popupBtnType, btnSureText, btnCancelText) {
var htmlStr = "";
htmlStr += "<div id='" + this.returnId("popupBg") + "' userDefinedAttr='popupLayerBg' class='popupBg'
style='z-index:" + this.returnPopupBgZIndex() + "' ></div>";
htmlStr += "<div id='" + this.returnId("popupShow") + "' class='popupShow' "+
" style='z-index:" + this.returnPopupShowZIndex() + "'>" +
" <div class='cancel_dingdai_pop'>" +
" <div class='cancel_dingdai_wrap_out' id='" + this.returnId("wrapOut") + "'>" +
" <div id='popupBox' class='cancel_dingdai_wrap " + boxstyle + "' >" +
" <h2 class='cancel_dingdai_title f-oh'>" +
" <span class='cancel_dingdai_text f-fl'>" + title + "</span>" +
" <em id='" + this.returnId("cancelImg") + "' class='cancel_dingdai_title_icon f-fr'>"+
" </em>" +
" </h2>" +
" <div id='" + this.returnId("popupContent") + "' style='width:100%;height:auto;"+
" background-color:white'>";
htmlStr += contentHtml;
htmlStr += " </div>";
htmlStr += this.getPopupLayerBtn(popupBtnType, btnSureText, btnCancelText);
htmlStr += " </div>" +
" </div>" +
" </div>" +
"</div>";
return htmlStr;
},
//彈出層按鈕選擇
getPopupLayerBtn: function (popupBtnType, btnSureText, btnCancelText) {
btnSureText = this.getParam(btnSureText) == "" ? "肯定" : btnSureText;
btnCancelText = this.getParam(btnCancelText) == "" ? "取消" : btnCancelText;
var htmlStr = "";
htmlStr += "<div class='cancel_dingdai_tijiao'>" +
" <dl class='f-fr f-oh'>";
var sureBtnStr = "<dd class='f-fl cancel_dingdai_submit'>" +
" <input type='button' id='" + this.returnId("popupBtnSure") +
" ' value='" + btnSureText + "' />" +
"</dd>";
var cancelBtnStr = "<dd class='f-fl cancel_dingdai_cancel'>" +
" <input type='button' id='" + this.returnId("popupBtnCancel") +
" ' value='" + btnCancelText + "' />" +
"</dd>";
switch (popupBtnType) {
case popupEnumBtn.SureAndCancel:
htmlStr += sureBtnStr + cancelBtnStr;
break;
case popupEnumBtn.SureOnly:
htmlStr += sureBtnStr;
break;
case popupEnumBtn.CancelOnly:
htmlStr += cancelBtnStr;
break;
}
htmlStr += " </dl>" +
"</div>";
return htmlStr;
},
//判斷元素是否存在,存在後部分加1
returnId: function (prefix) {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
if (len < 0) {
return prefix + "_1";
}
len++;
return prefix + "_" + len;
},
returnPopupBgZIndex: function () {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
if (len < 0) {
return 1001;
}
return 1002 + 2 * len - 1;
},
returnPopupShowZIndex: function () {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
if (len < 0) {
return 1002;
}
return 1002 + 2 * len;
},
//顯示彈出層
showPopup: function () {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
$("#popupBg_" + len).show();
$("#popupBg_" + len).css("height", $(document).height());
$("#popupShow_" + len).show();
},
//關閉彈出層
closePopup: function () {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
$("#popupBg_" + len).hide();
$("#popupShow_" + len).hide();
$("#popupBg_" + len).remove();
$("#popupShow_" + len).remove();
},
//註冊基礎事件
registerBasicEvent: function () {
//「X」號圖標和取消按鈕
var len = $("div[userDefinedAttr='popupLayerBg']").length;
$("#cancelImg_" + len + ",#popupBtnCancel_" + len).click(function () {
popupCommon.closePopup();
});
},
getParam: function (param) {
if (typeof (param) == "undefined") {
return "";
} else {
return param;
}
},
popupLayerPosition: function () {
var len = $("div[userDefinedAttr='popupLayerBg']").length;
var objHeight = $("#wrapOut_" + len).height() / 2;
var topValue = $(window).height() / 2 - objHeight + "px";
$("#wrapOut_" + len).css("margin-top", topValue);
},
coverObject: function (obj1, obj2) {
var o = this.cloneObject(obj1, false);
var name;
for (name in obj2) {
if (obj2.hasOwnProperty(name)) {
o[name] = obj2[name];
}
}
return o;
},
cloneObject: function (obj, deep) {
if (obj === null) {
return null;
}
var con = new obj.constructor();
var name;
for (name in obj) {
if (!deep) {
con[name] = obj[name];
} else {
if (typeof (obj[name]) == "object") {
con[name] = $.cloneObject(obj[name], deep);
} else {
con[name] = obj[name];
}
}
}
return con;
}
};
/************************(彈出層:加載url)*************************/
var popupLoad = function () {
this.defaultParams = {
//參數定義
title: "",
boxstyle: "",
url: "",
data: "",
loadback: $.noop,
callback: $.noop,//注意:返回值要是true/false的方法
btnId: "",
btnSureText: "",
btnCancelText: ""
};
this.options = {};
this.popupLength = 0;
};
popupLoad.prototype = {
constructor: popupLoad,
init: function (params) {
this.options = popupCommon.coverObject(this.defaultParams, params);
this._init(this.options);
},
_init: function (options) {
var popupLay = popupCommon.getPopupLayerHtml(this.options.title, this.options.boxstyle, "",
popupEnumBtn.SureAndCancel, this.options.btnSureText, this.options.btnCancelText);
$("body").append(popupLay);
$("#" + options.btnId).attr("disabled", "disabled");//防止屢次發送請求
$.ajaxSetup({
cache: false //關閉 AJAX 緩存
});
this.popupLength = $("div[userDefinedAttr='popupLayerBg']").length;
$("#popupContent_" + this.popupLength).load(options.url, options.data, function () {
popupCommon.showPopup();
popupCommon.popupLayerPosition();
$("#" + options.btnId).removeAttr("disabled");
if ($.isFunction(options.loadback)) {
options.loadback();
}
});
popupCommon.registerBasicEvent();
this._registerBtnClick(options);
},
_registerBtnClick: function (options) {
var len = this.popupLength;
$("#popupBtnSure_" + len).click(function () {
if (!$.isFunction(options.callback)) {
return;
}
if (!options.callback()) {
return;
}
popupCommon.closePopup();
});
}
};
$.popupLoad = new popupLoad();
/************************(彈出層:confirm框)*************************/
var popupConfirm = function () {
//參數定義
this.defaultParams = {
//參數定義
title: "",
content: "",
boxstyle: "",
isShowIcon: true,
callback: $.noop,//注意:返回值要是true/false的方法
btnSureText: "",
btnCancelText: ""
};
this.options = {};
this.popupLength = 0;
};
popupConfirm.prototype = {
constructor: popupConfirm,
init: function (params) {
this.options = popupCommon.coverObject(this.defaultParams, params);
this._init(this.options);
},
_init: function (options) {
var contentHtml = popupCommon.getBasicElements_Confirm(this.options.content, this.options.isShowIcon);
var popupLay = popupCommon.getPopupLayerHtml(this.options.title, this.options.boxstyle, contentHtml,
popupEnumBtn.SureAndCancel, this.options.btnSureText, this.options.btnCancelText);
$("body").append(popupLay);
this.popupLength = $("div[userDefinedAttr='popupLayerBg']").length;
popupCommon.showPopup();
popupCommon.registerBasicEvent();
popupCommon.popupLayerPosition();
this._registerBtnClick(options);
},
_registerBtnClick: function (options) {
var len = this.popupLength;
$("#popupBtnSure_" + len).click(function () {
popupCommon.closePopup();
if ($.isFunction(options.callback)) {
options.callback();
}
});
}
};
$.popupConfirm = new popupConfirm();
/************************(彈出層:Alert框)*************************/
var popupAlert = function (popupType) {
//參數定義
this.defaultParams = {
title: "",
content: "",
boxstyle: "",
callback: $.noop,//注意:返回值要是true/false的方法
};
this.options = {};
this.popupLength = 0;
this.popupType = popupType;
};
popupAlert.prototype = {
constructor: popupAlert,
init: function (params) {
this.options = popupCommon.coverObject(this.defaultParams, params);
this._init(this.options);
},
_init: function (options) {
var contentHtml = popupCommon.getBasicElements_Alert(this.popupType, this.options.content);
var popupLay = popupCommon.getPopupLayerHtml(this.options.title, this.options.boxstyle,
contentHtml, popupEnumBtn.SureOnly);
$("body").append(popupLay);
this.popupLength = $("div[userDefinedAttr='popupLayerBg']").length;
popupCommon.showPopup();
popupCommon.registerBasicEvent();
popupCommon.popupLayerPosition();
this._registerBtnClick(options);
},
_registerBtnClick: function (options) {
var len = this.popupLength;
$("#popupBtnSure_" + len).click(function () {
popupCommon.closePopup();
if ($.isFunction(options.callback)) {
options.callback();
}
});
}
};
$.popupError = new popupAlert(popupEnumType.Error);
$.popupInfo = new popupAlert(popupEnumType.Info);
$.popupQuestion = new popupAlert(popupEnumType.Question);
$.popupWarning = new popupAlert(popupEnumType.Warning);
$.popupAlert = new popupAlert(popupEnumType.Alert);
})(jQuery);
總結:因爲篇幅太長css樣式就不貼了,若是有須要或者想共同探討的同仁,隨時聯繫我,QQ:296319075 同時也但願你們提出寶貴意見,不吝賜教。共同進步!若有轉載,請註明出處,謝謝!^_^