1. When the checkbox is set by attr (' checked ', ' checked ') , the checkbox is repeatedly clicked, although the checked property is set correctly, The following code: (Code is the Select all function) $ (' #ckAll '). Click (function () {if ($ (' #ckAll '). attr ('
1. When the checkbox is set by attr (' checked ', ' checked ') , the checkbox is repeatedly clicked, although the checked property is set correctly, The following code: (Code is the Select all function)$ (' #ckAll '). Click (function () {if ($ (' #ckAll '). attr ('
Add a click event to TR, use the Find method to find all levels of elements under TR, children only the elements at the next level, so use Find.The return value of find is a jquery object, and in this project it is not known why the use of jquery to add the checked attribute to a checkbox or to remove the checked property does not change the state of the CHECKOBX
Recently, in the process of doing a project encountered such a problem: in the process of using the bootstrap modal box, there is a checkbox in the Modal box, initially selected, when the Trigger modal box button is clicked, when Chcekbox is selected, a tick is displayed, This time the selected state is cached, then click the Close button in the Modal box, click the Trigger Modal Box button again to pop up the modal box, this time the problem arises:
Recently, in the process of doing a project encountered such a problem: in the process of using the bootstrap modal box, there is a checkbox in the Modal box, initially selected, when the Trigger modal box button is clicked, when Chcekbox is selected, a tick is displayed, This time the selected state is cached, then click the Close button in the Modal box, click the Trigger Modal Box button again to pop up the modal box, this time the problem arises:T
$ (' #checkbox '). attr (' checked '); The return is checked or undefined. Not the original true and false, the workaround for this problem is as followsBefore the JQ1.6 version number, we would write our code like this:It's no problem before JQ1.6. But when we upgrade JQ1.6 to a higher version number. Here's the problem. At this point we will find:$ (' #cb '). a
The small problem has been troubling for a long time.I started by$ ("input[name=xxx]"). attr (' checked ', true);To set whether or not to select, all kinds of useless, clearly the code of the page is already checked=checked, is not displayed tick.Baffled ...Then I found the answer on the Internet.if (Databack.remind) {$ ("#isremind"). Prop ("
$ ('# Checkbox'). attr ('checked'); The returned value is checked or undefined, not true or false. The solution to this problem is as follows:
In versions earlier than JQ1.6, We will write our Code as follows:
This is done before JQ1.6, but when we upgrade JQ1.6 to a later version, the problem arises. At this time, we will find:
$ ('# Cb'). attr ('
$ (' #checkbox '). attr (' checked '); The return is checked or undefined, not the original true and false, and the workaround for this problem is as follows
In the previous version of JQ1.6, we would write our code like this:
This is not a problem before JQ1.6, but when we upgrade JQ1.6 to a higher version, the problem comes, and we find that:
$ (' #cb '). a
Just see the problem when the browser compatibility is the reason, ie, Google can display the normal.After searching online, it was found that jquery's attr () method was inappropriate.jQuery1.6 can be modified before using attr (), starting with jquery 1.6, the attr () method returns undefined properties that have not been set, and is set with prop () for settings of this type of checked.Description of two methods given by Jquey official website:Gets a property value that matches the first elem
The small problem has been troubling for a long time.I started by$("input[name=xxx]").attr(‘checked‘,true);To set whether or not to select, all kinds of useless, clearly the code of the page is already checked=checked, is not displayed tick.Baffled ...Then I found the answer on the Internet.if(dataBack.remind){$("#isremind").prop("
In IE, when using a checkbox or radio, you may find that you cannot sometimes pass checkboxobject.checked = True or Checkboxobject.setattribute (' checked ', true) Method of making a checkbox or radio by preselection.
The solution to this problem is to use the defaultchecked properties of the checkbox or radio to set t
action = (checkbox.checked? ')
Add ': ' Remove ');
Updateselected (Action,id,checkbox.name);
$scope. isselected = function (ID) {return $scope. Selected.indexof (ID) >=0; }
});
Line6 defines the angular app;
LINE10 defines the controller Addstylectrl;
LINE12-63 defines a Label object
Line64,66 declares two array objects in $scope (which can be merged into 1) to store tag IDs and name respectively;
Line68-78 defines the updateselected method, which is invoked by the updateselection;
Recently, I used jquery to operate checkbox in my work. I used the following method to select all and invert:Copy codeThe Code is as follows:Var ischecked = allCheckObj. is (': checked ');Ischecked? ChecksObj. attr ('checked', true): checksObj. attr ('checked', false ); There was no problem with ie during debugging. Co
Let's say there's a checkbox named CheckBox1 on the Web page with a form,form named Form1.
The code is as follows
Copy Code
var f = document.form1;var sum=0;if (f.checkbox1.length) {for (var i=0;i if (f.checkbox1[i].checked==true)sum=sum+1;}}else{if (f.checkbox1.checked) {Sum=1;}}Console.log (sum);
Note that the outermost if
Let's say there's a checkbox named CheckBox1 on the Web page with a form,form named Form1.
The code is as follows
var f = document.form1;var sum=0;if (f.checkbox1.length) {for (var i=0;i if (f.checkbox1[i].checked==true)sum=sum+1;}}else{if (f.checkbox1.checked) {Sum=1;}}Console.log (sum);
Note that the outermost if judgment
When doing the project encountered a jquery checkbok check box checked to remove the bug, consulted the great God, just to make sense of what is going on, here recorded, analysis to everyone.
First code:
Copy Code code as follows:
What is your favorite sport?
Copy Code code as follows:
$ ("#CheckedAll"). Click (function () {
if ($ (this). Is (": Checked")) {
$ ("
When doing the project encountered a jquery checkbok check box checked to remove the bug, consulted the great God, just to make sense of what is going on, here recorded, analysis to everyone.
First code:
The code is as follows:
is the sport you love?
The code is as follows:
$ ("#CheckedAll"). Click (function () {
if ($ (this). Is (": Checked")) {
$ ("[Name=items]:
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