如何用forEach替换javascript for循环并获取每次迭代的索引？

Question

I have this Javascript:

factory.remove = function (arr, property, num) {
    for (var i = arr.length - 1; i >= 0; --i) {
        if (arr[i][property] === num)
            arr.splice(i, 1);
    }
};

Can someone tell me how I could change the for loop to use a .forEach instead? What I am not sure about is how in the forEach I can access the i ? Also if I use the forEach will I be able to do a splice of that array or is it not possible?

Answer 1

This code

for (var i = arr.length - 1; i >= 0; --i) {
        if (arr[i][property] === num)
            arr.splice(i, 1);
    }

could be written like this

arr.forEach(function(elem,index){
    if(elem[property]===num)
       arr.splice(index, 1);
})