年前计划之jquery API 重读

既然工作卡住了，既然相关人员不在，活就不干了 🐢 做一下年前计划

3.X

选择器

:lang(str) 选定包含指定语言的所有元素匹配语言值等于所提供的语言代码，或以提供的语言代码开始，后面马上跟一个“ - ”的元素获取这个属性用prop

:header h1~~h7

:root 根元素，永远都是 html

:target url的哈希值 === 某个元素的id

:contains(txt) 包含指定文本内容选择器

:has(sel) 匹配含有指定元素的元素

:parent 匹配含有子元素或者文本的元素

:hidden :visible 匹配所有不可见元素，或者type为hidden的元素/匹配所有可见元素用可见性匹配

[name != str] [name *= str] [name ^= str] [name $= str] [name |= str] [name ~= str] 用属性匹配元素

:input 匹配任意类型的input元素表单属性匹配元素

:text 匹配所有单行文本框类似的:password :radio :checkbox :submit :reset :button :file

:image 匹配所有图像域

扩展：

<input type="image" />
创建一个图像控件，该控件单击后将导致表单立即被提交。

:enabled 匹配所有可用元素反之的 :disabled

:checked 复选框、单选框等，select中的option

:selected 匹配所有选中的option元素

ajax

$.ajax({
   type: "",
   url: "",
   data: "",
   success: function(data, status, jqXHR){
        this; // 调用本次AJAX请求时传递的options参数
    },
     error: function(request, status, error){
        this; // 调用本次AJAX请求时传递的options参数
    },
   complete: function (request, status) {
        this; // 调用本次AJAX请求时传递的options参数
    }
});

This is the full list of Ajax events, and in the order in which they are triggered. The indented events are triggered for each and every Ajax request (unless a global option has been set). The ajaxStart and ajaxStop events are events that relate to all Ajax requests together.

ajaxStart (Global Event)
This event is triggered if an Ajax request is started and no other Ajax requests are currently running.
beforeSend (Local Event)
This event, which is triggered before an Ajax request is started, allows you to modify the XMLHttpRequest object (setting additional headers, if need be.)
ajaxSend (Global Event)
This global event is also triggered before the request is run.
success (Local Event)
This event is only called if the request was successful (no errors from the server, no errors with the data).
ajaxSuccess (Global Event)
This event is also only called if the request was successful.
error (Local Event)
This event is only called if an error occurred with the request (you can never have both an error and a success callback with a request).
ajaxError (Global Event)
This global event behaves the same as the local error event.
complete (Local Event)
This event is called regardless of if the request was successful, or not. You will always receive a complete callback, even for synchronous requests.
ajaxComplete (Global Event)
This event behaves the same as the complete event and will be triggered every time an Ajax request finishes.
ajaxStop (Global Event)
This global event is triggered if there are no more Ajax requests being processed.

jQuery.param(obj,traditinal)
Create a serialized representation of an array, a plain object, or a jQuery object suitable for use in a URL query string or Ajax request. In case a jQuery object is passed, it should contain input elements with name/value properties.

.serialize()
Encode a set of form elements as a string for submission.

.serializeArray()
Encode a set of form elements as an array of names and values.

属性：

属性获取之间的差异

css：

offset() 视口偏移，可获取/赋值

position() 获取匹配元素相对父元素的偏移；只对可见元素生效。

文档处理

筛选

.end() 回到最近一个"破坏性"操作之前。

.closest(arg) 从元素本身开始，逐级向上匹配获取第一个匹配元素；

.addBack() 返回当前筛选对象和上一操作筛选出的对象；

.has(selector/element) 筛选出含有特定元素的元素；

.offsetParent() 返回最近的一个定位的祖先元素；