通过src值查找img标签，并在img标签中添加新的属性

If I have 5 images into the HTML page. I want to search 2 images by it's src attribute value and add a new attribute to the image tag.

如果在HTML页面中有5个图像。我想通过它的src属性值搜索2个图像，并在图像标签中添加一个新的属性。

The restriction is I can't search img tag by any id or class attribute value, I have only src value. In below code,

限制是我不能用任何id或类属性值搜索img标签，我只有src值。在以下代码中,

I want to search 2 img tag which has src value like img_src_1 and img_src_2 and want to add a new attribute in both img tag nopin="nopin".

我想搜索具有src值的img标签，比如img_src_1和img_src_2，我想在img标签nopin="nopin"中添加一个新的属性。

<html>
    <head>
        <script>
        jQuery(document).ready(function(){
            // find img tag by src value and add new attribute nopin="nopin" into this img tag
            var img_src_1 = "https://example.com/image-3.jpg";
            var img_src_2 = "https://example.com/image-5.jpg";

            // find images with src url value is img_src_1 & img_src_2
            var result1 = jQuery('img').find('src', img_src_1);
            var result2 = jQuery('img').find('src', img_src_2);

            // add new attribute nopin="nopin" in both img tag

        });
        </script>
    </head>
    <body>
        <h1>My Gallery Page</h1>
        <p>My Image 1</p>
        <img src="https://example.com/image-1.jpg" width="200px" height="200px">

        <p>My Image 2</p>
        <img src="https://example.com/image-2.jpg" width="200px" height="200px">

        <p>My Image 3</p>
        <img src="https://example.com/image-3.jpg" width="200px" height="200px">

        <p>My Image 4</p>
        <img src="https://example.com/image-4.jpg" width="200px" height="200px">

        <p>My Image 5</p>
        <img src="https://example.com/image-5.jpg" width="200px" height="200px">
    </body>
</html>

Resultant HTML should be like this after page loads

在页面加载之后，生成的HTML应该是这样的

<html>
    <body>
        <h1>My Gallery Page</h1>
        <p>My Image 1</p>
        <img src="https://example.com/image-1.jpg" width="200px" height="200px">

        <p>My Image 2</p>
        <img src="https://example.com/image-2.jpg" width="200px" height="200px">

        <p>My Image 3</p>
        <img nopin="nopin" src="https://example.com/image-3.jpg" width="200px" height="200px">

        <p>My Image 4</p>
        <img src="https://example.com/image-4.jpg" width="200px" height="200px">

        <p>My Image 5</p>
        <img nopin="nopin" src="https://example.com/image-5.jpg" width="200px" height="200px">
    </body>
</html>

Any help really appreciated, thanks in advance.

非常感谢您的帮助，谢谢。

8 个解决方案

#1

please try below simple and easy solution:

请尝试以下简单易行的解决方案:

        var img_src_1 = "https://example.com/image-3.jpg";
        var img_src_2 = "https://example.com/image-5.jpg";
        jQuery("img").each(function() {
        if(jQuery(this).attr("src") == img_src_1 || jQuery(this).attr("src") == img_src_2)
          {
            jQuery(this).attr("nopin", "nopin");
          }
       });

#2

You can achieve this by using jQuery's attribute selector, then using attr() to add the nopin attribute.

您可以通过使用jQuery的属性选择器来实现这一点，然后使用attr()来添加nopin属性。

It's worth noting however that nopin is a non-standard attribute which may cause some issues with HTML validity. I'd suggest using data-nopin instead, if possible.

但是值得注意的是，nopin是一个非标准属性，它可能会导致HTML有效性的一些问题。如果可能的话，我建议使用data-nopin。

jQuery(function($) {
  var img_src_1 = "https://example.com/image-3.jpg";
  var img_src_2 = "https://example.com/image-5.jpg";

  $(`img[src="${img_src_1}"], img[src="${img_src_2}"]`).attr('nopin', 'nopin');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<h1>My Gallery Page</h1>
<p>My Image 1</p>
<img src="https://example.com/image-1.jpg" width="200px" height="200px">

<p>My Image 2</p>
<img src="https://example.com/image-2.jpg" width="200px" height="200px">

<p>My Image 3</p>
<img src="https://example.com/image-3.jpg" width="200px" height="200px">

<p>My Image 4</p>
<img src="https://example.com/image-4.jpg" width="200px" height="200px">

<p>My Image 5</p>
<img src="https://example.com/image-5.jpg" width="200px" height="200px">

#3

Use this selector img[src="'+img_src_1+'"] not find

使用这个选择器img[src="'+img_src_1+'] not find

$(document).ready(function() {
  // find img tag by src value and add new attribute nopin="nopin" into this img tag
  var img_src_1 = "https://example.com/image-3.jpg";
  var img_src_2 = "https://example.com/image-5.jpg";

  // I want to find images with src url value is img_src_1 & img_src_2 and add new attribute nopin="nopin"
  var result1 = $('img[src="'+img_src_1+'"]');
  var result2 = $('img[src="'+img_src_2+'"]');
  result1.attr('nopin','nopin');
  result2.attr('nopin','nopin');
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>My Gallery Page</h1>
<p>My Image 1</p>
<img src="https://example.com/image-1.jpg" width="200px" height="200px">

<p>My Image 2</p>
<img src="https://example.com/image-2.jpg" width="200px" height="200px">

<p>My Image 3</p>
<img src="https://example.com/image-3.jpg" width="200px" height="200px">

<p>My Image 4</p>
<img src="https://example.com/image-4.jpg" width="200px" height="200px">

<p>My Image 5</p>
<img src="https://example.com/image-5.jpg" width="200px" height="200px">

Recommended version:

推荐版本:

No need to use full URL, just write image name and find it by this selector img[src*="'+img_name+'"] then, use data for attribute.

不需要使用完整的URL，只需编写图像名称并通过这个选择器img[src*="'+img_name+']找到它，然后使用数据作为属性。

var img_src_1 = "image-3.jpg";
var img_src_2 = "image-5.jpg";

$('img[src*="' + img_src_1 + '"], img[src*="' + img_src_2 + '"]').attr('data-nopin', 'nopin');

img[data-nopin] {
  border: 1px solid red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>My Gallery Page</h1>
<p>My Image 1</p>
<img src="https://example.com/image-1.jpg" width="200px" height="200px">

<p>My Image 2</p>
<img src="https://example.com/image-2.jpg" width="200px" height="200px">

<p>My Image 3</p>
<img src="https://example.com/image-3.jpg" width="200px" height="200px">

<p>My Image 4</p>
<img src="https://example.com/image-4.jpg" width="200px" height="200px">

<p>My Image 5</p>
<img src="https://example.com/image-5.jpg" width="200px" height="200px">

#4

Try following

尝试后

var result1 = $('img[src="'+ img_src_1 + '"]');
var result2 = $('img[src="'+ img_src_2 + '"]');
result1.attr("nopin", "nopin");
result2.attr("nopin", "nopin");

For reference, jQuery Attribute Selector

作为参考，jQuery属性选择器

#5

Loop the image and find the src of image with attr. Check src of image and if the condition match add new attribute to element with attr() function.

对图像进行循环，并使用attr查找图像的src。检查图像的src，如果条件匹配，则使用attr()函数向元素添加新属性。

jQuery(document).ready(function(){
            // find img tag by src value and add new attribute nopin="nopin" into this img tag
            var img_src_1 = "https://example.com/image-3.jpg";
            var img_src_2 = "https://example.com/image-5.jpg";

            // I want to find images with src url value is img_src_1 & img_src_2 and add new attribute nopin="nopin"
            var result1 = jQuery('img').find('src', img_src_1);
            var result2 = jQuery('img').find('src', img_src_2);
            $('img').each(function(){
              if($(this).attr('src') == img_src_1 || $(this).attr('src') == img_src_2) {
              $(this).attr('nopin', 'nopin');
              
              }
            });
        });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>My Gallery Page</h1>
        <p>My Image 1</p>
        <img src="https://example.com/image-1.jpg" width="200px" height="200px">

        <p>My Image 2</p>
        <img src="https://example.com/image-2.jpg" width="200px" height="200px">

        <p>My Image 3</p>
        <img src="https://example.com/image-3.jpg" width="200px" height="200px">

        <p>My Image 4</p>
        <img src="https://example.com/image-4.jpg" width="200px" height="200px">

        <p>My Image 5</p>
        <img src="https://example.com/image-5.jpg" width="200px" height="200px">

#6

Following code can help you.

下面的代码可以帮助您。

 jQuery(document).ready(function(){
            // find img tag by src value and add new attribute nopin="nopin" into this img tag
            var img_src_1 = "https://example.com/image-3.jpg";
            var img_src_2 = "https://example.com/image-5.jpg";

            // I want to find images with src url value is img_src_1 & img_src_2 and add new attribute nopin="nopin"
            jQuery('img[src="' + img_src_1 + '"]').attr("nopin" ,"nopin" );
            jQuery('img[src="' + img_src_2 + '"]').attr("nopin" ,"nopin" );

        });

#7

Try this - Used Javascript for internal code. Actually you don't need Jquery for that too (unnecessary increasing the bandwidth overhead).

尝试使用Javascript进行内部代码。实际上，您也不需要Jquery(不必要的增加带宽开销)。

<html>
<head>
    <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>

</head>
<body>
    <h1>My Gallery Page</h1>
    <p>My Image 1</p>
    <img src="https://www.drupal.org/files/issues/sample_7.png" width="200px" height="200px">

    <p>My Image 2</p>
    <img src="https://software-carpentry.org/files/2014/01/novice-sample.png" width="200px" height="200px">

    <p>My Image 3</p>
    <img src="https://software-carpentry.org/files/2014/01/novice-sample.png" width="200px" height="200px">

    <p>My Image 4</p>
    <img src="https://bellard.org/bpg/2.png" width="200px" height="200px">

    <p>My Image 5</p>
    <img src="https://bellard.org/bpg/2.png" width="200px" height="200px">
</body>
<script>
    jQuery(document).ready(function(){
        // find img tag by src value and add new attribute nopin="nopin" into this img tag
        var img_src_1 = "https://software-carpentry.org/files/2014/01/novice-sample.png";
        var img_src_2 = "https://www.drupal.org/files/issues/sample_7.png";

        // I want to find images with src url value is img_src_1 & img_src_2 and add new attribute nopin="nopin"
        var result = document.getElementsByTagName('img');
        for(var i=0;i<result.length;i++){
            if(result[i].src==img_src_1 || result[i].src==img_src_2){
                result[i].setAttribute("nopin", "nopin");
            }
        }
    });
    </script>

#8

You could use vanilla-JS

您可以使用vanilla-JS

/* retrieve images ($= means "attribute ending with") 
 * Note how easy is to look for several images (no need to write
 * ugly long and error-prone comparisons with ||), you just select them 
 * as you would do it in CSS 
 */ 
var imagesNoPin = document.querySelectorAll(
                 '[src $= "-3.jpg"], 
                  [src $= "-5.jpg"]');

/* set the attribute for each image. Note that you don't need to loop
 * over ALL images, as in other answers: you have already found them
 * before via the js-native querySelectorAll() method
 */
[].forEach.call(imagesNoPin, function(img) {
   img.setAttribute('nopin', 'nopin'); // with an attribute
   // img.dataset.nopin = "nopin"      // with a data-nopin attribute (suggested)
});

/* same result with spread [...] operator */
// [...imagesNoPin].map((img) => img.setAttribute('nopin', 'nopin'));

Codepen demo

Codepen演示

(In the example the images with the nopin attribute have been decorated with an outline in CSS)

(在本例中，带有nopin属性的图像已经用CSS中的大纲进行了修饰)

#1