How to determine whether a checkbox is selected using jquery

This article mainly introduces the jquery method to determine whether a check box is selected. Friends in need can refer to it.

Jquery summarizes the problem of determining whether a check box is selected and how to select it.

Let’s get to the point, or when the page has the following set of check boxes:

<input type="checkbox" name="fruit" value="apple">苹果 
<input type="checkbox" name="fruit" value="orange">橘子 
<input type="checkbox" name="fruit" value="banana">香蕉 
<input type="checkbox" name="fruit" value="grape">葡萄

Then use Jquery to get a set of name=fruit The method of checking the value of the check box is as follows:

var checkVal=''; 
$("input[name='fruit']:checkbox").each(function(){ 
  if($(this).attr('checked')){ 
    checkVal+=$(this).val()+','; 
  } 
}) 
判断 name=fruit 组的复选框是否有被选中的选项：
var flag=false; 
$("input[name='fruit']:checkbox").each(function(){ 
  if($(this).attr('checked')){ 
    flag=true; 
  } 
}) 
if(flag){ 
  alert('有被选中'); 
}else{ 
  alert('没有选中任何选项'); 
}

The above is the method of jquery to determine whether the check box is selected. I hope it will be helpful to everyone's study. That’s all the content of this chapter. For more related tutorials, please visit jQuery Video Tutorial!