It returns a boolean true if a match is found and a boolean false when no match is found. For example: // usage 1: using pure JavaScript document.getElementById('#email').hasAttribute('name'); // usage 2: using jQuery jQuery('#email')[0].hasAttribute('name'); // usage 3...
jQuery 判断是否包含某个属性 1、Get the attribute, check the value varattr = $(this).attr('name');//For some browsers, `attr` is undefined; for others, `attr` is false. Check for both.if(typeofattr !==typeofundefined && attr !==false) {//Element has this attribute} 2、Native Ja...
and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way ...
2012 jQuery Foundation, Inc. and other contributors * Released under the MIT license * http://jquery.org/license * * Date: 2013-2-4 */ (function( window, undefined ) { // Can't do this because several apps including ASP.NET trace // the ...
attributeHas selector Description:Selects elements that have the specified attribute, with any value. version added:1.0jQuery( "[attribute]" ) attribute:An attribute name. Example: Bind a single click to divs with an id that adds the id to the div's text. ...
The jQuery CDN supportsSubresource Integrity(SRI) (specification) which allows the browser to verify that the files being delivered have not been modified. Adding the new integrity attribute will ensure your application gains this security improvement in supporting browsers. ...
Selects elements that have the specified attribute with a value beginning exactly with a given string.Has Attribute Selector [name] Selects elements that have the specified attribute, with any value.Multiple Attribute Selector [name=”value”][name2=”value2″] Matches elements that match all...
获取多个checkbox选中项: $('input:checkbox').each(function() { if ($(this).attr('checked') ==true) { alert($(this).val()); } }); 设置第一个checkbox 为选中值: $('input:checkbox:first').attr("checked",'checked'); 或者 $('input:checkbox').eq(0).attr("checked",'true'); ...
选择器描述返回:contains(text)文本中含有 “text” 的元素集合元素:empty不包含子元素或者文本的空元素集合元素:has(selector)含有选择器所匹配的元素集合元素:parent含有子元素或文本集合元素:hidden选取所有不可见的元素集合元素:visible选取所有可见的元素集合元素 属性过滤选择器 选择器描述返回示例[attribute]拥有此属...
(input has gained focus) focusClass: 'focus', // class added on active state (mouse button is pressed on input) activeClass: 'active', // adds hoverClass to customized input on label hover and labelHoverClass to label on input hover labelHover: true, // class added to label if label...