Home Web Front-end JS Tutorial Basic operations of jQuery Html control (daily collection and organization)_jquery

Basic operations of jQuery Html control (daily collection and organization)_jquery

May 16, 2016 pm 03:11 PM

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>
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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
});
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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" />
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2.Span

//span
$("#btnSpanSet").click(function(){
$("#spanId").html("大家好");
});
$("#btnSpanGet").click(function(){
alert($("#spanId").html());
})
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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" />
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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)
});
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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" />
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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
});
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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" />
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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);
});
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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
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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
});
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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:

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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" />


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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" />


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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


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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> 
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This is all about the basic operation knowledge of jquery html control. I hope it will be helpful to you!

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