factory( global, true ) : function( w ) { if ( !w.document ) { throw new Error( "jQuery requires a window with a document" ); } return factory( w ); }; } else { factory( global ); } // Pass this if window is not defined yet }(typeof window !== "undefined" ? window :...
$.data(elem, name, data), $.data(elem, name) 源码解析: jQuery.extend({ // 1. 定义jQuery.data(elem, name, data, pvt) data: function( elem, name, data, pvt /* Internal Use Only */ ) { // 2. 检查是否可以设置数据 if ( !jQuery.acceptData( elem ) ) { return; // 如果参数el...
}// Checkforboth converted-to-camel and non-converted data property names// If a data property was specified//10. 如果参数name是字符串,则读取单个数据if( getByName ) {// First Try to find as-is property dataret = thisCache[ name ];// 先尝试读取参数name对应的数据// Test for null|unde...
var dataPriv = new Data() jQuery私有的,我们尽量不要对这个实例进行操作。 var dataUser = new Data() 这个就是服务于用户了,我们使用data()方法都是对这个实例进行操作。 所有的Data实例都有以下属性: 每个Data实例的expando属性的值都不相同,用来区分不同的Data实例,类似于id的作用,expando的值就是上文中...
Data.prototype.cache cache: function( owner ) { // Check if the owner object already has a cache // 获取在owner的缓存值 var value = owner[ this.expando ]; // If not, create one if ( !value ) { value = {}; // We can accept data for non-element nodes in modern browsers, ...
根据jquery官网介绍,data给存储DOM关联的数据, 设置数据是对$选取的所有JQuery对象, 获取数据是对$选取的所有对象的第一个对象的存储的数据。 设置语法格式 --- 设置单个数据 .data( key, value ) 设置一组数据 .data( obj ) : 获取语法格式 --- 获取单个数据 .data( key) 设置所有数据 .data() : ...
check data first before Import data From Excel into database using sqlbulk Check if control exists in page Check if FileUpload control is empty Check if iFrame Is Fully Loaded check if parameter exist check if the checkbox is checked check keyvaluepair present in list Check session if doesn'...
data data(name) ⇒ value data(name, value) ⇒ self Read or write data-* DOM attributes. Behaves like attr, but prepends data- to the attribute name. When reading attribute values, the following conversions apply: v1.0+ “true”, “false”, and “null” are converted to ...
element.data( "bind_once_defer_" + event , defer ); } return defer.done( callback ).promise(); }; The code works as follows: Check if the element already has a deferred attached for the given event if not, create it and make it so it is resolved when the event is fired the fi...
If you use the BINARY attribute with a TEXT data type, the column is assigned the\r\n binary (_bin) collation of the column\r\n character set. LONG and LONG VARCHAR map\r\n to the MEDIUMTEXT data type. This is a\r\n compatibility feature. ...