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Comments on Understanding createTreeWalker method in the context of replacing strings (or parts of them)
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Understanding createTreeWalker method in the context of replacing strings (or parts of them)
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I want to ensure I understand the following code; credit to user:m3g4p0p on Sitepoint, for this code:
const walker = document.createTreeWalker(
document.body,
NodeFilter.SHOW_TEXT
)
let node;
while ((node = walker.nextNode())) {
node.textContent = node.textContent.replace('a', 'b')
}
Exceptionally I have two questions:
- How do you understand each stage of the code?
- How does storing replaced strings in the
nodevariable makes a change in the text appearing to the end user?
3 comment threads