遍历div以将特定类与jquery匹配
我要尝试做的是，如果特定div组中的div与主体类ID号（例如，）具有相同的类ID号（例如，“。post-123”-ID号是“ 123”）。 postid-123'），然后向该div添加一个具有相同ID号的新类。
在我的代码中，所有内容似乎都运行正确，只是它没有在组中的所有div之间循环-只是将新类追加到组中的第一个div上。
jQuery / JS：
<script>
jQuery(document).ready(function($) {
var current_post_id = get_current_post_id();
var current_project_id = get_current_project_id();
function get_current_post_id() {
var body_class = $('body.single-project');
var post_id = '';
if(body_class) {
var classList = body_class.attr('class').split(/\s+/);
$.each(classList, function(index, item) {
if (item.indexOf('postid') >= 0) {
var item_arr = item.split('-');
post_id = item_arr[item_arr.length -1];
return false;
}
});
}
return post_id;
}
function get_current_project_id() {
var project = $('.et_pb_portfolio .et_pb_portfolio_item');
var project_id = '';
if(project) {
var classList = project.attr('class').split(/\s+/);
$.each(classList, function(index, item) {
if (item.indexOf('post') >= 0) {
var item_arr = item.split('-');
project_id = item_arr[item_arr.length -1];
return false;
}
});
}
return project_id;
}
if (current_post_id == current_project_id) {
$('.et_pb_portfolio #post-' + current_project_id).addClass('current-project');
}
console.log('project id is: ' + current_project_id);
console.log('page id is: ' + current_post_id);
});
</script>
胡子哥哥浏览 155回答 2
2回答
-
慕姐8265434
这是执行此操作的一种更简单的原始方法。const getCurrentProjectId = () => { let postId = Array.from(document.querySelector('body').classList).find(cls => cls.indexOf('postid-') > -1).split('-')[1]; return `post-${postId}`; }console.log(getCurrentProjectId());document.addEventListener('DOMContentLoaded', () => { let currentProject = getCurrentProjectId(); document.querySelectorAll('.project').forEach(proj => { if(proj.classList.contains(currentProject)) proj.classList.add('current-project'); });});.current-project { border: 2px solid red;}<body class="project-template-default single single-project postid-688 logged-in admin-bar has-stick chrome windows et_button_icon_visible et_button_custom_icon et_pb_button_helper_class et_transparent_nav et_fullwidth_nav et_fullwidth_secondary_nav et_non_fixed_nav et_show_nav et_cover_background et_secondary_nav_enabled et_secondary_nav_two_panels et_pb_gutter et_pb_gutters3 et_primary_nav_dropdown_animation_fade et_secondary_nav_dropdown_animation_fade et_pb_footer_columns4 et_header_style_left et_pb_pagebuilder_layout et_smooth_scroll et_right_sidebar et_divi_theme et-db et_minified_js et_minified_css customize-support"<div class="et_pb_module et_pb_portfolio et_pb_portfolio_0 et_pb_bg_layout_light"> <div class="et_pb_ajax_pagination_container"> <div id="post-708" class="post-708 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/finite-element-analysis/" title="Finite Element Analysis">Finite Element Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-702" class="post-702 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/refinery-project-water-wash-system/" title="Refinery Project – Water Wash System">Refinery Project – Water Wash System</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-695" class="post-695 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/marcellus-compression-station/" title="Marcellus Compression Station">Marcellus Compression Station</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-693" class="post-693 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/houston-ship-channel-tank-farm-expansion/" title="Houston Ship Channel – Tank Farm Expansion">Houston Ship Channel – Tank Farm Expansion</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-688" class="post-688 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/process-safety-management-pha-lopa-analysis/" title="Process Safety Management – PHA & LOPA Analysis">Process Safety Management – PHA & LOPA Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> </div></div></body>这是使用find的选项（假设只有一个帖子）：const getCurrentProjectId = () => `post-${Array.from(document.querySelector('body') .classList) .find(cls => cls.indexOf('postid-') > -1) .split('-')[1]}`;console.log(getCurrentProjectId());document.addEventListener('DOMContentLoaded', () => { let currentProject = getCurrentProjectId(); Array.from(document.querySelectorAll('.project')) .find(proj => proj.classList.contains(currentProject)) .classList.add('current-project');});.current-project { border: 2px solid red;}<body class="project-template-default single single-project postid-688 logged-in admin-bar has-stick chrome windows et_button_icon_visible et_button_custom_icon et_pb_button_helper_class et_transparent_nav et_fullwidth_nav et_fullwidth_secondary_nav et_non_fixed_nav et_show_nav et_cover_background et_secondary_nav_enabled et_secondary_nav_two_panels et_pb_gutter et_pb_gutters3 et_primary_nav_dropdown_animation_fade et_secondary_nav_dropdown_animation_fade et_pb_footer_columns4 et_header_style_left et_pb_pagebuilder_layout et_smooth_scroll et_right_sidebar et_divi_theme et-db et_minified_js et_minified_css customize-support"<div class="et_pb_module et_pb_portfolio et_pb_portfolio_0 et_pb_bg_layout_light"> <div class="et_pb_ajax_pagination_container"> <div id="post-708" class="post-708 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/finite-element-analysis/" title="Finite Element Analysis">Finite Element Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-702" class="post-702 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/refinery-project-water-wash-system/" title="Refinery Project – Water Wash System">Refinery Project – Water Wash System</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-695" class="post-695 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/marcellus-compression-station/" title="Marcellus Compression Station">Marcellus Compression Station</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-693" class="post-693 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/houston-ship-channel-tank-farm-expansion/" title="Houston Ship Channel – Tank Farm Expansion">Houston Ship Channel – Tank Farm Expansion</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-688" class="post-688 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/process-safety-management-pha-lopa-analysis/" title="Process Safety Management – PHA & LOPA Analysis">Process Safety Management – PHA & LOPA Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> </div></div></body>这是一个考虑到BenM对ID的评论的选项const getCurrentProjectId = () => `post-${Array.from(document.querySelector('body') .classList) .find(cls => cls.indexOf('postid-') > -1) .split('-')[1]}`;console.log(getCurrentProjectId());document.addEventListener('DOMContentLoaded', () => { document.querySelector(`#${getCurrentProjectId()}`).classList.add('current-project');});.current-project { border: 2px solid red;}<body class="project-template-default single single-project postid-688 logged-in admin-bar has-stick chrome windows et_button_icon_visible et_button_custom_icon et_pb_button_helper_class et_transparent_nav et_fullwidth_nav et_fullwidth_secondary_nav et_non_fixed_nav et_show_nav et_cover_background et_secondary_nav_enabled et_secondary_nav_two_panels et_pb_gutter et_pb_gutters3 et_primary_nav_dropdown_animation_fade et_secondary_nav_dropdown_animation_fade et_pb_footer_columns4 et_header_style_left et_pb_pagebuilder_layout et_smooth_scroll et_right_sidebar et_divi_theme et-db et_minified_js et_minified_css customize-support"<div class="et_pb_module et_pb_portfolio et_pb_portfolio_0 et_pb_bg_layout_light"> <div class="et_pb_ajax_pagination_container"> <div id="post-708" class="post-708 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/finite-element-analysis/" title="Finite Element Analysis">Finite Element Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-702" class="post-702 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/refinery-project-water-wash-system/" title="Refinery Project – Water Wash System">Refinery Project – Water Wash System</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-695" class="post-695 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/marcellus-compression-station/" title="Marcellus Compression Station">Marcellus Compression Station</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-693" class="post-693 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/houston-ship-channel-tank-farm-expansion/" title="Houston Ship Channel – Tank Farm Expansion">Houston Ship Channel – Tank Farm Expansion</a> </h3> </div><!-- .et_pb_portfolio_item --> <div id="post-688" class="post-688 project type-project status-publish hentry et_pb_post et_pb_portfolio_item"> <h3 class="et_pb_module_header"> <a href="/project/process-safety-management-pha-lopa-analysis/" title="Process Safety Management – PHA & LOPA Analysis">Process Safety Management – PHA & LOPA Analysis</a> </h3> </div><!-- .et_pb_portfolio_item --> </div></div></body> -
跃然一笑
为什么您需要遍历所有div元素才能做到这一点？由于ID属性应该始终是唯一的，因此您可以从body类中提取ID ，然后选择相关元素：if( $('body').hasClass('single-project') ){ var postID = /(postid-)[0-9]+/gm.exec($('body').attr('class'))[0].replace('postid-', ''); $('#post-' + postID).addClass('current-project');}
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