javascript do arrays intersect
let intersection = arrA.filter(x => arrB.includes(x));javascript do arrays intersect
let intersection = arrA.filter(x => arrB.includes(x));js array intersection object
const arr1 = [{ id: 1 }, { id: 2 }]
const arr2 = [{ id: 1 }, { id: 3 }]
const intersection = arr1.filter(item1 => arr2.some(item2 => item1.id === item2.id))
// intersection => [{ id: 1 }]js find intersection point
function line_intersect(x1, y1, x2, y2, x3, y3, x4, y4)
{
var ua, ub, denom = (y4 - y3)*(x2 - x1) - (x4 - x3)*(y2 - y1);
if (denom == 0) {
return null;
}
ua = ((x4 - x3)*(y1 - y3) - (y4 - y3)*(x1 - x3))/denom;
ub = ((x2 - x1)*(y1 - y3) - (y2 - y1)*(x1 - x3))/denom;
return {
x: x1 + ua * (x2 - x1),
y: y1 + ua * (y2 - y1),
seg1: ua >= 0 && ua <= 1,
seg2: ub >= 0 && ub <= 1
};
}javascript get intersection of two arrays
function getArraysIntersection(a1,a2){
return a1.filter(function(n) { return a2.indexOf(n) !== -1;});
}
var colors1 = ["red","blue","green"];
var colors2 = ["red","yellow","blue"];
var intersectingColors=getArraysIntersection(colors1, colors2); //["red", "blue"]Copyright © 2021 Codeinu
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