The Checkbox,radio of jquery, and select, is a difficult and focused aspect of jquery operations, and many front-end novices don't understand it very well. A long time no, I am in the writing sometimes it is inevitable to some of the operation of the shuffle, remember not clearly, now, to do some simple summary!
1, CheckBox
checkboxes and change the status of the checkbox:
There is also a function to achieve full and inverse JS selection. Post the Code directly, and sort it out by yourself.
Either of the two methods is easier.
Next we will introduce the methods for jQuery to select all or not select the checkbox check box. Although JavaScript is easy to implement, the code is ve
This article mainly introduces jquery's methods of capturing the carriage return key and obtaining the checkbox value and asynchronous request. The example analyzes jQuery's techniques for capturing the carriage return key, obtaining the checkbox value, and responding to asynchronous requests, for more information about how jquery captures the carriage return key
After the settings, the checkbox does not change to the selected status. After debugging with chrome, you can check that the checkbox does have the checked attribute. To solve this problem, you can refer to the next article.
The Code is as follows:
$ ("Input"). attr ("checked", "checked ")
After setting, the checkbox
12 tips for jquery operation check box (checkbox), jquerycheckbox
1. Obtain the selected items of a single checkbox (three methods)$ ("Input: checkbox: checked"). val ()Or$ ("Input: [type = 'c
JQuery implements custom checkbox and radio styles, and jquerycheckbox
1. Cause
Recently, we have to implement a custom radio style in our work, and we usually use the default style, because we can't think of a solution, so we began to search, finally, we saw a good solution to solve our problems perfectly.
2. Principle
Everyone knows that when writing a structure, radio or
Checkbox is a special form element. Next I will introduce you to the details of jQuery form checkbox operations. If you need to know more, try it.
You cannot directly write in html as follows:
The Code is as follows:
Copy code
Generally, the above Code is checked by default in html. However, if you use
Record how to obtain the checked attribute of the checkbox for forgetting:
Assume that an HTML page contains the following code:
So how can we get the checked status of chbrem through jquery:
The error code is as follows:
Alert ($ ("# chbrem"). ATTR ("checked "));
The correct retrieval method should be:
Alert ($ ("# chbrem") [0]. Checked );
The output is true.
When the
This article mainly introduces jQuery's method of connecting all selected checkbox attribute values to a string, which can be used to connect Selected attribute values to a string. it has some reference value, for more information about how jQuery concatenates an attribute value of all selected checkboxes into a string, see the example in this article. Share it with you for your reference. The details are a
1, causes
Recently in the work to implement a custom radio style, and we usually use the default style, because they do not know how to solve the method, so began to search, and finally saw a good solution, can be a perfect solution to the problems we encountered.
2, principle
We all know that in the writing structure, radio or checkbox will follow the label together, the label for the attribute value and input
Forms are often encountered in front-end development, where the checkbox check box is not necessary for the operation of the check box, the following three kinds: Select all, do not choose, the election. Below zero carefree to give everybody analysis analysis.
First, checkbox Select All
We all know that the way to select a checkbox is to add attributes to it ch
This article mainly describes the precautions for jquery traversal of checkbox. If you need a friend, you can refer to them and hope to help you in front-end projects these two days, to traverse the checkbox on the page through jquery, use the following code:
The Code is as follows:
Var val_instanceCodeStr = "";
This article mainly introduces Jquery to traverse the checkbox to obtain the value of the selected item. If you need it, refer to the following source code:
The Code is as follows:
JQuery (function ($ ){$ ("Input [name = 'key']: checkbox"). click (function (){Var ids = ''
. jQuery1.6.1 has updated the Attributes module and fixed several bugs.In particular, the Boolean attributes, such as: checked,selected,readonly and disabled are treated the same as before 1.6.1 and 1.6. This means the following code:1.$ (": CheckBox"). attr ("Checked", true);2.$ ("option"). attr ("selected", true);3.$ ("Input"). attr ("ReadOnly", true);4.$ ("Input
Since the version of jquery has been updated quickly and the code has changed a lot, the following jquery code is query1.4 version
Radio
1. Get the selected value, three methods can be:
$ (' input:radio:checked '). Val ();
$ ("input[type= ' Radio ']:checked"). Val ();
$ ("Input[name= ' rd ']:checked"). Val ();
2. Set
versions earlier than 1.6 (. attr () to process attributes and properties. However, the old. attr () method has some bugs and is difficult to maintain. JQuery1.6.1 updated the Attributes module and fixed several bugs.
In particular, boolean attributes, such as checked, selected, readonly, and disabled are processed the same way before 1.6.1 and 1.6. This means the following code:
The Code is as follows:
$ (": Checkbox"). attr ("checked", true );
$ (
jquery implements custom checkbox and radio styles1, causesRecently in the work to implement a custom radio style, and we usually use the default style, because they really do not think of the solution, so began to search, finally saw a good solution, can perfectly solve the problems we encountered.2, principleWe all know that when writing the structure, radio or checkb
:$ ("input[@type =radio][@checked]"). Val ();//Get the value of the selected item in the Radio box (note that there are no spaces in the middle)$ ("input[@type =radio][@value =2]"). attr ("Checked", ' checked ');//Set the Radio box to value=2 the selected state. (note there is no space in the middle)3, check box:$ ("input[@type =
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