Javascript查找并替换dom字符串

Question

I want to use replace method of javascript to replace some html string. I stored a dom string by fetching .outerHTML and want to replace a perticular word with the string. Here is my outerHTML dom which i fetch with javascript :

<figure class="image" onclick="someMethod('btbjwkjpuynyzdijsvf5.jpg', 'Title','$caption', 'image','other params')">
    <img id="45435435345" src="btbjwkjpuynyzdijsvf5.jpg" caption="$caption" title="title">
    <figcaption>$caption</figcaption>
</figure>

Here is want to replace all $caption with real caption which i fetch from database later. But this is not working. I tried on browser console to store this string on variable but it giving error after single quote (which is available inside function parameter). So i think it is having a problem with unrecognized string value. How can i resolve this issue so i can replace $caption value from string.

Answer 1

This is not a good practice but instead you can use a javascript templating engine

 $("#myDiv").html($("#myDiv").html().replace(/\\$caption/g,'My caption'));

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="myDiv"> <figure class="image" onclick="someMethod('btbjwkjpuynyzdijsvf5.jpg', 'Title','$caption', 'image','other params')"> <img id="45435435345" src="btbjwkjpuynyzdijsvf5.jpg" caption="$caption" title="title"> <figcaption>$caption</figcaption> </figure> </div>

Answer 2

I would use the attribute selector

$("[caption]").attr("caption", myCaptionText)

you should ofcourse be a bit more specific so you don't over write every instance of the caption attribute

$(".specificParent [caption]").attr("caption", myCaptionText)