select checkbox by its value and make it checked

Question

I have a checkbox

<input type="checkbox" name="productIdCheckbox" value="@item.Id">

To check it I run this code:

function checkItem(elem) {
        var id = $(elem).attr("id");
        $("input[name='productIdCheckbox'][value='" + id + "']").attr("checked", this.checked);
    };

What is wrong in my code?

Answer 1

尝试这样的事情

$("input[name='productIdCheckbox'][value='" + id + "']").attr("checked", "checked");

Answer 2

干得好

$("input[value='+id +']").attr("checked", "checked");