将数组的元素作为参数列表传递给函数（而不是组合字符串）

I have a customized (console.)log function

我有一个自定义（控制台。）日志功能

function clog(toConsole, toFile){
    console.log(toConsole);
    // other things
}

But now I can't pass it the string in 'value: %d', value format

但是现在我无法将'value：％d'中的字符串传递给值格式

...unless I wrap it in an array

...除非我将它包装在一个数组中

clog(['to console: %d', value], 'other things'])

Is there a way to pass the elements of the array ['to console: %d', value] to a function like: console.log('to console: %d', value)

有没有办法将数组['to console：％d'，value]的元素传递给类似的函数：console.log（'to console：％d'，value）

1 个解决方案

#1

What you are looking for is Function.prototype.apply. It allows you to call a function with an array, which is filled in as the arguments. In this case

您正在寻找的是Function.prototype.apply。它允许您使用数组调用函数，该数组作为参数填充。在这种情况下

console.log.apply(console, ['to console: %d', value]);

will be equivalent to

将等同于

console.log('to console: %d', value);

#1