Example of function usage of JS as a value

This article describes the use of JS as a function. Share it for your reference, as follows:

 function callSomeFunction(someFunction,someArgument){ return someFunction(someArgument);}

This function accepts two parameters. The first function should be a function, and the second parameter should be a value to be passed to the function. The function is general.

like:

 function add10(num){ return num+10;}var result = callSomeFunction(add10,10);alert(result) //20

Returning another function from one function (an extremely useful technique), such as:

Create a comparison function:

 function createComparisonFunction(propertyName){ return function (object1,object2){ var value1 = object1[propertyName]; var value2 = object2[propertyName]; if(value1 < value2){ return -1; } else if(value1 > value2){ return 1; } else{ return 0; } };}

Examples of use:

 var data = [{name:"Zachary",age:28},{name:"Nicholas",age:29}];data.sort(createComparisonFunction("name"));alert(data[0].name); //Nicholasdata.sort(createComparisonFunction("age"));alert(data[0].name); //Zachary

For more information about JavaScript related content, please check out the topics of this site: "Summary of JavaScript switching effects and techniques", "Summary of JavaScript search algorithm skills", "Summary of JavaScript animation effects and techniques", "Summary of JavaScript errors and debugging techniques", "Summary of JavaScript data structures and algorithm skills", "Summary of JavaScript traversal algorithms and techniques", and "Summary of JavaScript mathematical operations usage"

I hope this article will be helpful to everyone's JavaScript programming.