getElementsByTagName() 通过标 tag 标签查找 HTML 元素 querySelector() CSS 选择器查找 HTML 元素 querySelectorAll() CSS 选择器查找符合条件所有 HTML 元素 document.forms() 对象选择器查找 HTML 对象 以上方法中只有getElementById()和querySelector()查找到的是单个元素,其它都是查找到的元素集合(相当于一...
1.通过id获取 document.getElementById(“id”) 2.通过name获取 document.getElementsByName(“Name”) 3.通过标签名选取元素 document.getElementsByTagName(“tag”) 4.通过CLASS类选取元素 document.getElementsByClassName(“class”) 5.通过CSS选择器选取元素 document.querySelectorAll(“css selector") 通过Java...
if (allPageTags[i].className==theClass) { //Manipulate this in whatever way you want allPageTags[i].style.display='none'; } } } 鉴于getElementById()方法使用比较频繁,我在网上搜集了一下关于此方法的一些用法。 document.getElementById("link").href; document.getElementById("link").target; ...
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One effective alternative when multiple DOM elements need to be added is to usedocument fragmentsinstead, which willimprove efficiency and performance. For example: constdiv =document.getElementById("my_div");constfragment =document.createDocumentFragment();constelems =document.querySelectorAll('a')...
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JavaScript (JS) is undoubtedly the most used scripting language that powers almost all modern websites and web apps, along with HTML and CSS. It enables developers to add interactive elements to their UI that end-users can interact with. As the need for better and more efficient UIs (user ...
and this very helpful method has been joined by getElementsByTagName, to get all elements via a specific element tag; getElementsByClassName, to get all elements that share the same class name; and the very new querySelector and querySelectorAll methods, which allow us to use the CSS style...
javascript - How to get an array without duplicates from object elements - Stack Overflow 推荐度: 相关推荐I have an object with groups (as an example). Each group object contains one header id and multiple trigger ids. I want to get an array of all the triggers of all groups without ...
在VBA中运行 Set button = WD.FindElementById("su") Debug.Print WD.ExecuteScript("return arguments[0].getAttribute(arguments[1])", button, "value") 就可以得到它的value属性:百度一下。 同理,运行 Call WD.ExecuteScript("arguments[0].setAttribute(arguments[1],...