我如何能找到DIV与某些文本?例如:

<div>
SomeText, text continues.
</div>

试图使用这样的东西:

var text = document.querySelector('div[SomeText*]').innerTEXT;
alert(text);

当然,这是行不通的。我该怎么做呢?


当前回答

这里已经有很多很棒的解决方案了。但是,为了提供一个更精简的解决方案,并且更符合querySelector行为和语法的思想,我选择了一个用几个原型函数扩展Object的解决方案。这两个函数都使用正则表达式来匹配文本,但是,字符串可以作为松散搜索参数提供。

简单地实现以下函数:

// find all elements with inner text matching a given regular expression
// args: 
//      selector: string query selector to use for identifying elements on which we 
//                should check innerText
//      regex: A regular expression for matching innerText; if a string is provided,
//             a case-insensitive search is performed for any element containing the string.
Object.prototype.queryInnerTextAll = function(selector, regex) {
    if (typeof(regex) === 'string') regex = new RegExp(regex, 'i'); 
    const elements = [...this.querySelectorAll(selector)];
    const rtn = elements.filter((e)=>{
        return e.innerText.match(regex);
    });
    
    return rtn.length === 0 ? null : rtn
}

// find the first element with inner text matching a given regular expression
// args: 
//      selector: string query selector to use for identifying elements on which we 
//                should check innerText
//      regex: A regular expression for matching innerText; if a string is provided,
//             a case-insensitive search is performed for any element containing the string.
Object.prototype.queryInnerText = function(selector, text){
    return this.queryInnerTextAll(selector, text)[0];
}

实现了这些函数后,现在可以进行如下调用:

document.queryInnerTextAll('div.link', 'go'); This would find all divs containing the link class with the word go in the innerText (eg. Go Left or GO down or go right or It's Good) document.queryInnerText('div.link', 'go'); This would work exactly as the example above except it would return only the first matching element. document.queryInnerTextAll('a', /^Next$/); Find all links with the exact text Next (case-sensitive). This will exclude links that contain the word Next along with other text. document.queryInnerText('a', /next/i); Find the first link that contains the word next, regardless of case (eg. Next Page or Go to next) e = document.querySelector('#page'); e.queryInnerText('button', /Continue/); This performs a search within a container element for a button containing the text, Continue (case-sensitive). (eg. Continue or Continue to Next but not continue)

其他回答

谷歌有这作为顶部结果为那些谁需要找到一个节点与特定的文本。 通过更新,节点列表现在在现代浏览器中是可迭代的,而不必将其转换为数组。

解决方案可以像这样使用forEach。

var elList = document.querySelectorAll(".some .selector");
elList.forEach(function(el) {
    if (el.innerHTML.indexOf("needle") !== -1) {
        // Do what you like with el
        // The needle is case sensitive
    }
});

当一个普通的选择器不能选择一个节点时,我可以在节点列表中查找/替换文本,所以我必须一个接一个地过滤每个节点以检查它是否有针。

因为你已经在javascript中要求它,所以你可以有这样的东西

function contains(selector, text) {
  var elements = document.querySelectorAll(selector);
  return Array.prototype.filter.call(elements, function(element){
    return RegExp(text).test(element.textContent);
  });
}

然后像这样叫它

contains('div', 'sometext'); // find "div" that contain "sometext"
contains('div', /^sometext/); // find "div" that start with "sometext"
contains('div', /sometext$/i); // find "div" that end with "sometext", case-insensitive

OP的问题是关于纯JavaScript而不是jQuery。 虽然有很多答案,我喜欢@Pawan Nogariya的答案,但请看看这个替代答案。

你可以在JavaScript中使用XPATH。更多关于MDN文章的信息请点击这里。

document.evaluate()方法对XPATH查询/表达式求值。因此,您可以在那里传递XPATH表达式,遍历HTML文档并找到所需的元素。

在XPATH中,您可以通过如下所示的文本节点选择一个元素,它将获得具有以下文本节点的div。

//div[text()="Hello World"]

要获得一个包含一些文本的元素,使用以下方法:

//div[contains(., 'Hello')]

XPATH中的contains()方法将节点作为第一个参数,将要搜索的文本作为第二个参数。

看这里,这是JavaScript中XPATH的例子

下面是一个代码片段:

var headings = document.evaluate("//h1[contains(., 'Hello')]", document, null, XPathResult.ANY_TYPE, null );
var thisHeading = headings.iterateNext();

console.log(thisHeading); // Prints the html element in console
console.log(thisHeading.textContent); // prints the text content in console

thisHeading.innerHTML += "<br />Modified contents";  

如您所见,我可以获取HTML元素并按我喜欢的方式修改它。

这里已经有很多很棒的解决方案了。但是,为了提供一个更精简的解决方案,并且更符合querySelector行为和语法的思想,我选择了一个用几个原型函数扩展Object的解决方案。这两个函数都使用正则表达式来匹配文本,但是,字符串可以作为松散搜索参数提供。

简单地实现以下函数:

// find all elements with inner text matching a given regular expression
// args: 
//      selector: string query selector to use for identifying elements on which we 
//                should check innerText
//      regex: A regular expression for matching innerText; if a string is provided,
//             a case-insensitive search is performed for any element containing the string.
Object.prototype.queryInnerTextAll = function(selector, regex) {
    if (typeof(regex) === 'string') regex = new RegExp(regex, 'i'); 
    const elements = [...this.querySelectorAll(selector)];
    const rtn = elements.filter((e)=>{
        return e.innerText.match(regex);
    });
    
    return rtn.length === 0 ? null : rtn
}

// find the first element with inner text matching a given regular expression
// args: 
//      selector: string query selector to use for identifying elements on which we 
//                should check innerText
//      regex: A regular expression for matching innerText; if a string is provided,
//             a case-insensitive search is performed for any element containing the string.
Object.prototype.queryInnerText = function(selector, text){
    return this.queryInnerTextAll(selector, text)[0];
}

实现了这些函数后,现在可以进行如下调用:

document.queryInnerTextAll('div.link', 'go'); This would find all divs containing the link class with the word go in the innerText (eg. Go Left or GO down or go right or It's Good) document.queryInnerText('div.link', 'go'); This would work exactly as the example above except it would return only the first matching element. document.queryInnerTextAll('a', /^Next$/); Find all links with the exact text Next (case-sensitive). This will exclude links that contain the word Next along with other text. document.queryInnerText('a', /next/i); Find the first link that contains the word next, regardless of case (eg. Next Page or Go to next) e = document.querySelector('#page'); e.queryInnerText('button', /Continue/); This performs a search within a container element for a button containing the text, Continue (case-sensitive). (eg. Continue or Continue to Next but not continue)

在2021年遇到这个问题时,我发现使用XPATH太复杂了(需要学习其他东西),不适合做一些应该相当简单的事情。

我想到了这个:

function querySelectorIncludesText (selector, text){
  return Array.from(document.querySelectorAll(selector))
    .find(el => el.textContent.includes(text));
}

用法:

querySelectorIncludesText('button', 'Send')

请注意,我决定使用包含,而不是严格的比较,因为这是我真正需要的,请随意调整。

如果你想支持所有浏览器,你可能需要这些腻子:

  /**
   * String.prototype.includes() polyfill
   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes#Polyfill
   * @see https://vanillajstoolkit.com/polyfills/stringincludes/
   */
  if (!String.prototype.includes) {
    String.prototype.includes = function (search, start) {
      'use strict';

      if (search instanceof RegExp) {
        throw TypeError('first argument must not be a RegExp');
      }
      if (start === undefined) {
        start = 0;
      }
      return this.indexOf(search, start) !== -1;
    };
  }