Two ways to call self-executing functions in js

This article brings you two methods of calling self-executing functions in js. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Self-executing function definition:
After the self-executing function or self-calling function is declared, it will be called immediately. It can only be used once. There are two ways to write it.

Writing method one:(function)(actual parameter)

<script>
    (function (n1,n2){
        console.log("这是匿名函数的自执行的第一种写法，结果为:"+(n1+n2))
    })(10,100)//110

    (function start(n1,n2){
        console.log("这是函数声明方式的自执行的第一种写法，结果为:"+(n1+n2))
    })(10,100)//110</script>

Writing method two:Format: (function (actual parameter)) is as follows

<script>
    (function (n1,n2){
        console.log("这是匿名函数的自执行的第二种写法，结果为："+(n1+n2))
    }(10,100))//110

    (function start(n1,n2){
        console.log("这是函数声明方式的自执行的第二种写法，结果为："+(n1+n2))
    }(10,100))//110</script>

Generally, self-executing functions and closures are related, because generally when we use closures, the closures obtain the final value of the variable, so we need to use the self-executing function to get the value of the variable each time. Bind it to a closure so that the closure can get the value of each variable change.

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Analysis summary of local objects & built-in objects & host objects in js

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