javascript - 为什么我的 jQuery 函数只打开一个链接而不打开代码中列出的其他链接？

Question

我目前正在我正在开发的网站中实现一个脚本，该脚本会检查用户选中了哪些复选框，然后一旦用户单击提交，它就会下载所述文件。我遇到的问题是，无论点击了多少复选框，都只会下载第一个文件，而不会下载其他文件。

这是我的代码:

// Global manual variables
var classic;
var racing;
var flexer;
// Global handbook variables
var classicEng;
var classicMulti;
var flexerEng;
var racerEng;

// Checkbox download function

jQuery(document).ready(function() {
    classic = jQuery('#edit-submitted-manuals-required-1');
    racing = jQuery('#edit-submitted-manuals-required-2');
    flexer = jQuery('#edit-submitted-manuals-required-3');
    classicEng = jQuery('#edit-submitted-handbooks-required-1');
    classicMulti = jQuery('#edit-submitted-handbooks-required-2');
    flexerEng = jQuery('#edit-submitted-handbooks-required-3');
    racerEng = jQuery('#edit-submitted-handbooks-required-4');

    jQuery('#edit-submit').click(function() {  
        if (classicEng.is(':checked') && classicMulti.is(':checked') && flexerEng.is(':checked') && racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank');

        } else if (classicEng.is(':checked') && classicMulti.is(':checked') && flexerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');

        } else if (classicEng.is(':checked') && classicMulti.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');

        } else if (classicEng.is(':checked') && flexerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');

        } else if (classicEng.is(':checked') && racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank');  

        } else if (classicMulti.is(':checked') && flexerEng.is(':checked') && racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank');  

        } else if (classicMulti.is(':checked') && flexerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank'); 

        } else if (classicEng.is(':checked') && racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank'); 

        } else if (flexerEng.is(':checked') && racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank'); 

        } else if (classicEng.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-45-english.pdf', '_blank');

        } else if (classicMulti.is(":checked")) {
            window.open('/sites/default/files/manuals/classic-xl-45.pdf', '_blank');

        } else if (flexerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/flexer-45-english.pdf', '_blank');

        } else if (racerEng.is(':checked')) {
            window.open('/sites/default/files/manuals/racing-45-english.pdf', '_blank'); 

        } else if (classic.is(':checked') && racing.is(':checked') && flexer.is(':checked')) { 
            window.open('/sites/default/files/manuals/classic-xl-parts.pdf', '_blank');
            window.open('/sites/default/files/manuals/racing-45-parts.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-xl-parts.pdf', '_blank');

        } else if (classic.is(':checked') && flexer.is(":checked")) {
            window.open('/sites/default/files/manuals/classic-xl-parts.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-xl-parts.pdf', '_blank'); 

        } else if (classic.is(':checked') && racing.is(":checked")) {  
            window.open('/sites/default/files/manuals/classic-xl-parts.pdf', '_blank')
            window.open('/sites/default/files/manuals/racing-45-parts.pdf', '_blank');

        } else if (racing.is(':checked') && flexer.is(':checked')) {
            window.open('/sites/default/files/manuals/racing-45-parts.pdf', '_blank');
            window.open('/sites/default/files/manuals/flexer-xl-parts.pdf', '_blank');

        } else if (classic.is(':checked')) {
            window.open('/sites/default/files/manuals/classic-xl-parts.pdf', '_blank');

        } else if (racing.is(':checked')) {
            window.open('/sites/default/files/manuals/racing-45-parts.pdf', '_blank');

        } else if (flexer.is(':checked')) {
            window.open('/sites/default/files/manuals/flexer-xl-parts.pdf', '_blank');

        }  else {
            alert("Please choose a file to download");
        }
    });
});

如果有人能发现我在这里做错了什么，将不胜感激!

Answer 1

因为您正在使用 else if 。而且，如果您快速尝试打开新窗口，大多数浏览器会默认阻止打开新窗口。用户将不得不在他们这边允许弹出窗口。