JS中两个数组A数组包含B数组，现在要把A数组中B数组的部分删除，怎么做！

Question

数组A（wxLocalResource://imageid987654321123456789,wxLocalResource://imageid987654321123456789,wxLocalResource://imageid987654321123456789wxLocalResource://imageid987654321123456789,wxLocalResource://imageid123456789987654321,wxLocalResource://imageid987654321123456789,wxLocalResource://imageid123456789987654321,wxLocalResource://imageid987654321123456789,wxLocalResource://imageid123456789987654321）
数组B（wxLocalResource://imageid123456789987654321,wxLocalResource://imageid123456789987654321,wxLocalResource://imageid123456789987654321）以上两个数组怎么比较，代码要怎么写？

Answer 1

let arr1 = ["wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid123456789987654321", "wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid123456789987654321", "wxLocalResource://imageid987654321123456789", "wxLocalResource://imageid123456789987654321"]
let arr2 = ["wxLocalResource://imageid123456789987654321", "wxLocalResource://imageid123456789987654321", "wxLocalResource://imageid123456789987654321"]
let arr3 = arr1.filter((item) => !(arr2.some((i) => i == item)))
console.log(arr3);

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Answer 2

var a = [1, 3, 5, 7, 9, 11];

var b = [5, 11];

function arr(a, b) {

for (var i = 0; i < a.length; i++) {

for (var j = 0; j < b.length; j++) {

if (a[i] === b[j]) {

a.splice(i, 1);

}

}

}

return a;

}

var pos = arr(a,b);

console.log(pos);

Answer 3

var a=[1,2,3,4,5,6]; var b=[2,3,6]; var c =[]; for(var i=0;i