


Basic operations of jQuery Html control (daily collection and organization)_jquery
I am bored, so I collect and summarize the common operations of jQuery. I hope it will be useful to novices.
Based on jquery 1.3.2
<!--<script type="text/javascript" src="jquery/jquery-1.3.2.js"></script>--> <!--<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js" type="text/javascript"></script>--> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
1. Text box
//文本框 $("#btnTextGet").click(function(){ alert($("#txtNum").val()); }); $("#btnTextSet").click(function(){ $("#txtNum").attr("value",'123456');//赋值 //$("#txtNum").val("123456");//赋值 });
html code:
Text box:
<input type="text" id="txtNum" /> <input type="button" value="给文本框赋值" id="btnTextSet" /><input type="button" value="获取文本框值" id="btnTextGet" />
2.Span
//span $("#btnSpanSet").click(function(){ $("#spanId").html("大家好"); }); $("#btnSpanGet").click(function(){ alert($("#spanId").html()); })
html code
span tag:
<span id="spanId"></span><input type="button" value="给span标签赋值" id="btnSpanSet" /><input type="button" value="获取span标签内容" id="btnSpanGet" />
3. Drop-down box:
//下拉框 $("#btnSelectText").click(function(){ alert($("#ddlBook option:selected").text()); }); $("#btnSelectValue").click(function(){ alert($("#ddlBook option:selected").val()); }); $("#btnClearSelect").click(function(){ $("#ddlBook").empty();//清空下拉列表 }); $("#ddlBook").change(function(){//添加change事件 var val=$("#ddlBook").val(); //获取Select选择的Value var text=$("#ddlBook option:selected").text(); //获取Select选择的Text var checkIndex=$("#ddlBook ").get(0).selectedIndex; //获取Select选择的索引值 var maxIndex=$("#ddlBook option:last").attr("index"); //获取Select最大的索引值 alert(text); }); $("#btnSelectAppend").click(function(){ $("#ddlBook").append("<option value=\"5\">物理</option>"); //为Select追加一个Option(下拉项) }); $("#btnSelectPreAppend").click(function(){ $("#ddlBook").prepend("<option value=\"0\">请选择</option>"); //为Select插入一个Option(第一个位置) });
html source code
Drop-down box:
<select id="ddlBook"> <option value="1">语文</option> <option value="2">数学</option> <option value="3">英语</option> <option value="4">政治</option> </select> <input type="button" value="获取下拉框选中的值" id="btnSelectText" /><input type="button" value="获取下拉框选中的value" id="btnSelectValue" /> <input type="button" value="清空下拉框" id="btnClearSelect" /><input type="button" value="后面追加选项" id="btnSelectAppend" /> <input type="button" value="第一个位置插入" id="btnSelectPreAppend" />
4.radio radio button
//radio 单选框 $("#btnRadioValue").click(function(){ //alert($("input:radio[type='radio'][checked]").val()); alert($("input:radio[type='radio'][name=IsEnable][checked]").val());//这是jquery 1.3的写法,在1.2版本下运行有问题 //alert($("input[@type=radio][@checked]").val());//1.2的版本的写法 }); $("#btnRadioSet").click(function(){ $("input:radio[type='radio'][name=IsEnable]").attr("checked",'0');//设置value=0的项目为当前选中项 });
html source code:
radio control:
是<input type="radio" value="1" checked="checked" name="IsEnable" /> 否<input type="radio" value="0" name="IsEnable" /> <input type="button" value="获取Radio选中的值" id="btnRadioValue" /><input type="button" value="选中Value为0的选项" id="btnRadioSet" />
5. Checkbox
//复选框 $("#btn1").click(function(){ $("[name='checkbox']").attr("checked",'true');//全选 }); $("#btn2").click(function(){ $("[name='checkbox']").removeAttr("checked");//取消全选 }); $("#btn3").click(function(){ $("[name='checkbox']:even").attr("checked",'true');//选中所有奇数 }); $("#btn4").click(function(){ $("[name='checkbox']").each(function(){ if($(this).attr("checked")) { $(this).removeAttr("checked"); } else { $(this).attr("checked",'true'); } }); }); $("#btn5").click(function(){ var str=""; $("input[name='checkbox']:checkbox:checked").each(function(){ str+=($(this).val()+"\r"); }); alert(str); });
html source code:
Checkbox:
<input type="button" id="btn1" value="全选"/> <input type="button" id="btn2" value="取消全选"/> <input type="button" id="btn3" value="选中所有奇数"/> <input type="button" id="btn4" value="反选"/> <input type="button" id="btn5" value="获得选中的所有值"/> <br> <input type="checkbox" name="checkbox" value="checkbox1" />checkbox1 <input type="checkbox" name="checkbox" value="checkbox2" />checkbox2 <input type="checkbox" name="checkbox" value="checkbox3" />checkbox3 <input type="checkbox" name="checkbox" value="checkbox4" />checkbox4 <input type="checkbox" name="checkbox" value="checkbox5" />checkbox5 <input type="checkbox" name="checkbox" value="checkbox6" />checkbox6 <input type="checkbox" name="checkbox" value="checkbox7" />checkbox7 <input type="checkbox" name="checkbox" value="checkbox8" />checkbox8
6. Button
//隐藏按钮 $("#btnHide").click(function() { if($("#btn").is(":hidden")) { $("#btnHide").val("隐藏按钮"); //$("#btn").show;//这种写法也可以 $("#btn").css('display',''); } else { $("#btnHide").val("显示按钮"); //$("#btn").hide();//这种写法也可以 $("#btn").css('display','none'); } //$("#btn").toggle();//这一句就可以实现上面的功能 });
html source code:
button:
JQuery操作Html控件 <!--<script type="text/javascript" src="jquery/jquery-1.3.2.js"></script>--> <!--<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js" type="text/javascript"></script>--> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script> 文本框:
span标签:
Drop-down box:
<select id="ddlBook"> <option value="1">语文</option> <option value="2">数学</option> <option value="3">英语</option> <option value="4">政治</option> </select> <input type="button" value="获取下拉框选中的值" id="btnSelectText" /><input type="button" value="获取下拉框选中的value" id="btnSelectValue" /> <input type="button" value="清空下拉框" id="btnClearSelect" /><input type="button" value="后面追加选项" id="btnSelectAppend" /> <input type="button" value="第一个位置插入" id="btnSelectPreAppend" />
radio control:
是<input type="radio" value="1" checked="checked" name="IsEnable" /> 否<input type="radio" value="0" name="IsEnable" /> <input type="button" value="获取Radio选中的值" id="btnRadioValue" /><input type="button" value="选中Value为0的选项" id="btnRadioSet" />
Checkbox:
<input type="button" id="btn1" value="全选"/> <input type="button" id="btn2" value="取消全选"/> <input type="button" id="btn3" value="选中所有奇数"/> <input type="button" id="btn4" value="反选"/> <input type="button" id="btn5" value="获得选中的所有值"/> <br> <input type="checkbox" name="checkbox" value="checkbox1" />checkbox1 <input type="checkbox" name="checkbox" value="checkbox2" />checkbox2 <input type="checkbox" name="checkbox" value="checkbox3" />checkbox3 <input type="checkbox" name="checkbox" value="checkbox4" />checkbox4 <input type="checkbox" name="checkbox" value="checkbox5" />checkbox5 <input type="checkbox" name="checkbox" value="checkbox6" />checkbox6 <input type="checkbox" name="checkbox" value="checkbox7" />checkbox7 <input type="checkbox" name="checkbox" value="checkbox8" />checkbox8
button:
<input type="button" id="btn" value="我是按钮"/><input type="button" id="btnHide" value="隐藏按钮"/> <br /><br /> </body> </html>
This is all about the basic operation knowledge of jquery html control. I hope it will be helpful to you!

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