<input id="btn" type="button" value="点击"/> <ul> <li id="test">1</li> <li>2</li> <li>3</li> </ul> <input type="checkbox" value="复选框" id="ckb" name="ckbName"/>
<script type="text/javascript"> $(document).ready(function() { $('#btn').bind('click',function(){//为什么点击事件必须在上面方法里面 //alert("User clicked on btn"); alert($(this).val()); console.log("User clicked on btn"); console.log("123:"+$("[name=ckbName]:checkbox").prop("checked",this.checked)); }); console.log($('li')[0].nodeName); // 输出'li' console.log($('#test')[0].nodeName); //输出'li' console.log($('li').length); //输出'3 console.log(Object.prototype.toString.call($('li'))); console.log('%O', $('li')); console.log('%o', $('li')); $('#ckb').bind('click',function(){ console.log(this.checked);//this表示上下文;checked表示 Checkbox 对象的属性(是否被选中) }); }); </script>
参考:http://www.html-js.com/article/Read-jQuery-jQuery-objects
http://www.alloyteam.com/2013/11/console-log/