Javascript 如果源包含，则更改图像_Javascript_Jquery_Html_Css

Javascript 如果源包含，则更改图像

javascript jquery html css

Javascript 如果源包含，则更改图像,javascript,jquery,html,css,Javascript,Jquery,Html,Css,我有一张清单看起来像 <li class=""> <ul class="item highlightShoplift"> <li class="title left"> <img width="30" height="30" src="/images/crimes/c.png?v=1486475443550"> </li> <li class="radio right has-pretty

我有一张清单看起来像

<li class="">
  <ul class="item  highlightShoplift">
    <li class="title left">
      <img width="30" height="30" src="/images/crimes/c.png?v=1486475443550">
    </li>
    <li class="radio right has-pretty-child">
      <div class="clearfix prettyradio labelright  blue" role="radio" aria-checked="false" aria-disabled="false" "=" ">
        <input type="radio" value="shoplift " name="crime " style="display: none; ">
        <a href="# " role="presentation " tabindex="0 " class=" "></a>
        <label for="undefined " class=" "></label>
      </div>
    </li>
    <li class="bonus left ">
      Shoplift
    </li>
    <li class="points left ">
      <span class="desc ">-4 Nerve</span>
    </li>
    <li class="clear "></li>
  </ul>
</li>






如果将id
属性添加到图像标记，如
<img id="imgToChange" width="30" height="30" src="/images/crimes/c.png?v=1486475443550">

并使用jquery
$("#imgToChange").attr('src', 'http://medictests.com/wp-content/uploads/2011/05/checkmark.png');

使用jQuery：
$("img").attr('src' ,'http://medictests.com/wp-content/uploads/2011/05/checkmark.png');

请注意，最好给img一个类，只针对特定的图像。
这取决于许多因素，例如，触发更改的因素、手头的需求等
下面是一个示例代码段，用于根据示例要求更改图像，例如，在预定义的时间后使用JavaScript
更改图像
现在，我们可以使用普通的JavaScript
来完成它，下面是一些步骤：

找到我们瞄准的图像元素（考虑使用特定的选择器和组合器）
了解超时时间
更改图像的src
属性以指向新图像


window.onload=function（）{
//获取图像元素
var img=文件查询选择器（“ul.item img”）；
//新形象
var imageUrl=http://medictests.com/wp-content/uploads/2011/05/checkmark.png';
//例如，在设定的时间后更改图像
setTimeout（函数（）{
setAttribute（“src”，imageUrl）；
}, 1000);
}



这确实是一个糟糕的问题，但是我认为如果图像的SRC包含某个单词，则需要更改图像
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
window.onload = function () {
    var src = ''; //YOUR SRC IF STRING CONTAINS
    var other_src = ''; //YOUR SRC IF STRING DOESN'T CONTAIN
    if(src.indexOf('YOUR WORD') > 0) {
        document.getElementById("image").src = src; 
    } else {
        document.getElementById("image").src = other_src; 
    }
}
</script>
</head>
<body>
<li class="">
  <ul class="item  highlightShoplift">
    <li class="title left">
      <img width="30" height="30" src="" id="image">
    </li>
    <li class="radio right has-pretty-child">
      <div class="clearfix prettyradio labelright  blue" role="radio" aria-checked="false" aria-disabled="false" "=" ">
        <input type="radio" value="shoplift " name="crime " style="display: none; ">
        <a href="# " role="presentation " tabindex="0 " class=" "></a>
        <label for="undefined " class=" "></label>
      </div>
    </li>
    <li class="bonus left ">
      Shoplift
    </li>
    <li class="points left ">
      <span class="desc ">-4 Nerve</span>
    </li>
    <li class="clear "></li>
  </ul>
</li>
</body>
</html>


window.onload=函数（）{
var src=''；//如果字符串包含
var other_src=''；//如果字符串不包含
如果（src.indexOf（'YOUR WORD'）>0）{
document.getElementById（“image”）.src=src；
}否则{
document.getElementById（“image”）.src=other\u src；
}
}





<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
window.onload = function () {
    var src = ''; //YOUR SRC IF STRING CONTAINS
    var other_src = ''; //YOUR SRC IF STRING DOESN'T CONTAIN
    if(src.indexOf('YOUR WORD') > 0) {
        document.getElementById("image").src = src; 
    } else {
        document.getElementById("image").src = other_src; 
    }
}
</script>
</head>
<body>
<li class="">
  <ul class="item  highlightShoplift">
    <li class="title left">
      <img width="30" height="30" src="" id="image">
    </li>
    <li class="radio right has-pretty-child">
      <div class="clearfix prettyradio labelright  blue" role="radio" aria-checked="false" aria-disabled="false" "=" ">
        <input type="radio" value="shoplift " name="crime " style="display: none; ">
        <a href="# " role="presentation " tabindex="0 " class=" "></a>
        <label for="undefined " class=" "></label>
      </div>
    </li>
    <li class="bonus left ">
      Shoplift
    </li>
    <li class="points left ">
      <span class="desc ">-4 Nerve</span>
    </li>
    <li class="clear "></li>
  </ul>
</li>
</body>
</html>