本文介绍了如何获取一个DOM元素的::之前的内容与javscript?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 我尝试了一些方法,但我仍然无法做到! 所以,这很困惑我! 因此,我想知道是否可以获取一个dom元素的 :: before 内容,由css3设置! // https://rollbar.com/docs/const links =在Ruby之前的document.querySelectorAll(`ul.image-list a`); links [0]; //< a href =/ docs / notifier / rollbar-gem /class =ruby>一个> links [0]; // links [0] .textContent; //Rubylinks [0] .innerText; //Rubylinks [0] .innerHTML; //Ruby// ???链接[0] :: before; img src =https://i.stack.imgur.com/j4Op4.pngalt =![enter image description here> 解决方案通过:之前作为第二个参数 window.getComputedStyle() : console.log(getComputedStyle(document.querySelector('p'),':before')。getPropertyValue('content' ); p :: before,p :: after {内容:'Test';} < p> Lorem存有< / p为H. I had tried some ways, but I still can't make it!So, it's very confused me!Therfore, I wanna to know whether it is possible to get a dom element's ::before content, which was set by css3 ! // https://rollbar.com/docs/const links = document.querySelectorAll(`ul.image-list a`);links[0];// <a href="/docs/notifier/rollbar-gem/" class="ruby">::before Ruby</a>links[0];//links[0].textContent;//"Ruby"links[0].innerText;// "Ruby"links[0].innerHTML;// "Ruby"// ??? links[0]::before;This is the case 解决方案 Pass ":before" as the second parameter to window.getComputedStyle():console.log(getComputedStyle(document.querySelector('p'), ':before').getPropertyValue('content'));p::before,p::after { content: ' Test ';}<p>Lorem Ipsum</p> 这篇关于如何获取一个DOM元素的::之前的内容与javscript?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 10-21 00:25