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noodl-docs/javascript/extending/build-script/change-nodes-at-build-time.md
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---
title: Change nodes at build time
hide_title: true
---
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# Change nodes at build time
:::note
This is recommended to only use in 2.7.x.
If using it in 2.6.x, you will change the current project
which will not be temporary during building.
:::
```js
module.exports = {
async onPreBuild(context) {
// Get all the "Function" nodes
const functionNodes = context.project.getNodesWithType('JavaScriptFunction');
functionNodes.forEach((node) => {
// Replace all "Hello World" to "Hello" in the scripts
node.parameters.functionScript = node.parameters.functionScript
.replace("Hello World", "Hello");
});
},
};
```