jquery code to determine whether checkbox is selected

jquery code to determine whether checkbox is selected_jquery

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Release： 2016-05-16 18:18:16

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Copy code The code is as follows:

 
//Whether it is selected or not, verify that there is a selected return true, otherwise return false 
function mycheckbox() { 
var falg = 0; 
$("input[name='soft[]']:checkbox").each(function () { 
if ($( this).attr("checked")) { 
falg = 1; 
} 
}) 
if (falg > 0) 
return true; 
else 
 return false; 
} 

This is a pretty good method, bookmarked.
The following function is a supplement to the above:

Copy code The code is as follows:

 That's how it was originally written. How to write jq1.42. 
Secondly, it is recommended that your logic processing 
function mycheckbox() { 
var falg = 0; 
$("input[name='soft[]']:checkbox").each(function () { 
if ($(this).attr("checked")) { 
falg =1; 
return false; 
} 
}) 
if (falg > ; 0) 
return true; 
else 
return false; 
}

The following is a simple judgment
jquery core judgment statement judgment statement

if($('input:checkbox').attr("checked")==true)

Everyone knows that in html, if a checkbox is checked, it is checked= "checked".
But if we use jquery alert($("#id").attr("checked")), it will prompt you that it is true instead of checked
So many friends judge if($("#id"). attr("checked")=="true") This is wrong. In fact, it should be if($("#id").attr("checked")==true)

The example includes Let’s take a look at a few functions.

Code

Copy code The code is as follows:

New Document

复主代码代码如下:

 
/************단일 확인란에서 모두 선택*************************/ 
function clickCheckbox() { 
if($("#checkPathAll").attr("checked")) 
{ 
$("input[name='checkPath']").each( function() { 
$(this).attr("checked", true) 
}); 
} 
else 
{ 
$("input[name='checkPath']").each(function() { 
$(this).attr("checked", false ) 
}); 
} 
} 