What is callback in callback
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You can nest one callback inside in another callback to execute the actions sequentially one by one. This is known as callbacks in callbacks.
loadScript(“/script1.js”, function (script) {
console.log(“first script is loaded”);
loadScript(“/script2.js”, function (script) {
console.log(“second script is loaded”);
loadScript(“/script3.js”, function (script) {
console.log(“third script is loaded”);
// after all scripts are loaded
});
});
});