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It is recommended to use semicolons after every statement in JavaScript. For example, in the below case (that is an IIFE = Immediately Invoked Function Expression) it throws an error ".. is not a function" at runtime due to missing semicolon.
javascript
1// define a function
2
3var fn = (function () {
4 //...
5})(
6 // semicolon missing at this line
7
8 // then execute some code inside a closure
9 function () {
10 //...
11 }
12)();and it will be interpreted as
javascript
1var fn = (function () {
2 //...
3 })(function () {
4 //...
5 })();In this case, we are passing the second function as an argument to the first function and then trying to call the result of the first function call as a function. Hence, the second function will fail with a "... is not a function" error at runtime.
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