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

问题

I have many checkboxs as below,

<li><input type="checkbox" name="areaofinterest" value="home_coo" id="home_coo" class="Checkbox" > Cooking</li>
    <li><input type="checkbox" name="areaofinterest" value="home_cra" id="home_cra" class="Checkbox"> Crafts</li>
    <li><input type="checkbox" name="areaofinterest" value="home_dec" id="home_dec" class="Checkbox"> Decorating</li>
    <li><input type="checkbox" name="areaofinterest" value="home_ent" id="home_ent" class="Checkbox"> Entertaining</li>
    <li><input type="checkbox" name="areaofinterest" value="home_gar" id="home_gar" class="Checkbox"> Gardening</li>
    <li><input type="checkbox" name="areaofinterest" value="home_hom" id="home_hom" class="Checkbox"> Home Improvement</li>
    <li><input type="checkbox" name="areaofinterest" value="home_mar" id="home_mar" class="Checkbox"> Marriage</li>
    <li><input type="checkbox" name="areaofinterest" value="home_par" id="home_par" class="Checkbox"> Parenting</li>
    <li><input type="checkbox" name="areaofinterest" value="home_pet" id="home_pet" class="Checkbox" > Pets</li>
    <li><input type="checkbox" name="areaofinterest" value="home_ret" id="home_ret" class="Checkbox"> Retirement</li>

How can I use jQuery to get the checked values and output as areaofinterest="home_coo,home_mar,home_pet" ?

Thanks a lot.

回答1:

Use the .map() function:

$('.Checkbox:checked').map(function() {return this.value;}).get().join(',')

Breaking that down:

$('.Checkbox:checked') selects the checked checkboxes.

.map(function() {return this.value;}) creates a jQuery object that holds an array containing the values of the checked checkboxes.

.get() returns the actual array.

.join(','); joins all of the elements of the array into a string, separated by a comma.

Working DEMO

回答2:

var areaofinterest = '';

$('[name="areaofinterest"]')​.each(function(i,e) {
    var comma = areaofinterest.length===0?'':',';
    areaofinterest += (comma+e.value);
})​;

To get only checked boxes value :

var areaofinterest = '';

$('[name="areaofinterest"]')​.each(function(i,e) {
    if ($(e).is(':checked')) {
        var comma = areaofinterest.length===0?'':',';
        areaofinterest += (comma+e.value);
    }
})​;

FIDDLE

You could also do:

var areaofinterest = [];
$('[name="areaofinterest"]:checked').each(function(i,e) {
    areaofinterest.push(e.value);
});

areaofinterest = areaofinterest.join(',');

And there's probably a bunch of other ways to do this ?

回答3:

 var mode = [];
            jQuery("input[name='mode[]']:checked").each(function(i) {
                mode.push($(this).val());
            });

回答4:

var values = "";
$("checkbox[name=areaofinterest]").each(function() { 
    values += $(this).val() + ",";
});

values = values.substring(0, values.length - 2);

回答5:

Try something like this:

var areaofinterest= "";

$("input[type=\"checkbox\"]").each(function() {
    if ($(this).attr("checked")) {
        if (areaofinterest !== "") areaofinterest += ",";

        areaofinterest += $(this).value();
    }
});

回答6:

Or you use can do using array like shown below

 var checkBoxArray = new Array();
 var areaofinterest = '';

 $(':checkbox:checked').each(function(i){
        checkBoxArray .push($(this).attr("value"));

});

  if (checkBoxArray .length == 0) {
     } else {
     while (checkBoxArray .length != 0) {
            if (checkBoxArray .length == 1) {
                areaofinterest += checkBoxArray .pop();
            } else {
                areaofinterest += (checkBoxArray .pop() + ",");
                 }
            }
}
console.log(areaofinterest);

though you will get String in reverse order.

回答7:

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

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

alert("My favourite programming languages are: " + programming);

    OR

var favProgramming = [];
$.each($("input[name='programming']:checked"), function(){            
    favProgramming .push($(this).val());
});

alert("My favourite programming languages are: " + favProgramming);

FOR DEMO HERE

来源：https://stackoverflow.com/questions/11723297/using-jquery-to-get-multiple-checkboxs-value-and-output-as-comma-separated-stri