[英]Call a function multiple times with more than one argument in JavaScript
Let's say I have this function 假设我有这个功能
function myFunction(a, b, c) {
... code here ...
}
Now I want to call it multiple times with several different arguments each time: 现在,我想多次调用它,每次使用几个不同的参数:
myFunction('sky', 'blue', 'air');
myFunction('tree', 'green', 'leaf');
myFunction('sun', 'yellow', 'light');
myFunction('fire', 'orange', 'heat');
myFunction('night', 'black', 'cold');
How can I merge all those calls in just one? 如何将所有这些呼叫合并为一个?
I know how to do it with iterations or forEach
when there is just one argument, but I can't figure out how to do it with various non-numerical arguments. 当只有一个参数时,我知道如何使用迭代或forEach
做到这一点,但我无法弄清楚如何使用各种非数值参数来做到这一点。
Unless you change myFunction
, you can't call it once and have it magically act as though it had been called five times. 除非您更改myFunction
,否则您将无法调用它一次并使它具有被调用五次的神奇效果。
You can code a single call in a loop, though, if the information you're for the arguments using is stored elsewhere. 但是,如果您要使用的参数信息存储在其他位置,则可以在循环中编写单个调用的代码 。
For instance, if we assume an array of objets: 例如,如果我们假设一个objets数组:
var data = [
{a: 'sky', b: 'blue', c: 'air'},
{a: 'tree', b: 'green', c: 'leaf'},
{a: 'sun', b: 'yellow', c: 'light'},
{a: 'fire', b: 'orange', c: 'heat'},
{a: 'night', b: 'black', c: 'cold'}
]:
then 然后
data.forEach(function(entry) {
myFunction(entry.a, entry.b, entry.c);
});
Or if it's an array of arrays, we can use the nifty Function#apply
function: 或者,如果它是一个数组数组,我们可以使用漂亮的Function#apply
函数:
var data = [
['sky', 'blue', 'air'],
['tree', 'green', 'leaf'],
['sun', 'yellow', 'light'],
['fire', 'orange', 'heat'],
['night', 'black', 'cold']
]:
then: 然后:
data.forEach(function(entry) {
myFunction.apply(null, entry);
});
You seem to be looking for apply
您似乎正在寻找apply
var values = [
['sky', 'blue', 'air'],
['tree', 'green', 'leaf'],
['sun', 'yellow', 'light'],
['fire', 'orange', 'heat'],
['night', 'black', 'cold']
];
values.forEach(function(args) { myFunction.apply(null, args); })
or spread syntax in ES6: 或在ES6中扩展语法 :
for (const args of values) myFunction(...args);
lets suppose you already have an array with all the values: 假设您已经有一个包含所有值的数组:
var colors = ['sky', 'blue', 'air', 'tree', 'green', 'leaf', 'sun', 'yellow', 'light', 'fire', 'orange', 'heat', 'night', 'black', 'cold']; while(colors.length > 0){ myFunction.apply(this, colors.splice(0,3)); //call the function with chunks of 3 elements }
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