jQuery checkbox values to comma separated list

问题

I have several checkboxes with a name array and I want the output of the checked boxes to be a variable with a comma separated list.

<input type="checkbox" name="example[]" value="288" />
<input type="checkbox" name="example[]" value="289" />
<input type="checkbox" name="example[]" value="290" />

For example if the first and last box are selected the output will be:

var output = "288,290";

How can I do this with jQuery?

回答1:

You can use :checkbox and name attribute selector (:checkbox[name=example\\[\\]]) to get the list of checkbox with name="example[]" and then you can use :checked filter to get only the selected checkbox.

Then you can use .map function to create an array out of the selected checkbox.

DEMO

var output = $.map($(':checkbox[name=example\\[\\]]:checked'), function(n, i){
      return n.value;
}).join(',');

回答2:

Currently un-tested, but I believe the following should work:

var valuesArray = $('input:checkbox:checked').map( function () {
    return $(this).val();
}).get().join();

Edited, after a small break, to use native DOM, rather than $(this).val() (which is needlessly expensive, in context):

var valuesArray = $('input:checkbox:checked').map( function() {
    return this.value;
}).get().join(",");

回答3:

var valuesArray = $('input[name="valuehere"]:checked').map(function () {  
        return this.value;
        }).get().join(",");

works for me always

回答4:

jQuery how to get multiple checkbox's value and output as comma separated String list.

https://www.tutsmake.com/jquery-multiple-checkbox-values-to-comma-separated-string/

    $(document).ready(function() {
        $(".btn_click").click(function(){
 
            var programming = $("input[name='programming']:checked").map(function() {
                return this.value;
            }).get().join(', ');
 
            alert("My favourite programming languages are: " + programming);
        });
    });

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery Get Values of Selected Checboxes</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> 
</head>
<body>
    <form>
        <h3>Select your favorite Programming Languages :</h3>
        <label><input type="checkbox" value="PHP" name="programming"> PHP</label>
        <label><input type="checkbox" value="Java" name="programming"> Java</label>
        <label><input type="checkbox" value="Ruby" name="programming"> Ruby</label>
        <label><input type="checkbox" value="Python" name="programming"> Python</label>
        <label><input type="checkbox" value="JavaScript" name="programming"> JavaScript</label>
        <label><input type="checkbox" value="Rust" name="programming">Rust</label>
        <label><input type="checkbox" value="C" name="programming"> C</label>
        <br>
        <button type="button" class="btn_click" style="margin-top: 10px;">Click here to Get Values</button>
    </form>
</body>
</html>

来源：https://stackoverflow.com/questions/9593237/jquery-checkbox-values-to-comma-separated-list

标签

jquery

arrays

list

checkbox

comma