我發(fā)現(xiàn)這段代碼可以在 div 中創(chuàng)建對角線。https://jsbin.com/tefakagohi/edit?html,css,output我正在嘗試在 JS 中制作一個線條生成器。但是我想使用js完全創(chuàng)建這個對象......從 document.createElement() 等開始......我這里有一些代碼：function createLine(name, x1, y1, x2, y2, color){var rectX1;var rectY1;var rectX2;var rectY2;//Line direction// 0 = top left -> bottom right// 1 = top right -> bottom left// 2 = bottom left -> top right// 3 = bottom right -> top leftvar lineDirection = null;//Find the directionif (x1 < x2 && y1 < y2) {    lineDirection = 0;    rectX1 = x1;    rectY1 = y1;    rectX2 = x2;    rectY2 = y2;}if (x2 < x1 && y1 < y2) {    lineDirection = 1;    rectX1 = x2;    rectY1 = y1;    rectX2 = x1;    rectY2 = y2;}if (x1 < x2 && y2 < y1) {    lineDirection = 2;    rectX1 = x1;    rectY1 = y2;    rectX2 = x2;    rectY2 = y1;}if (x2 < x1 && y2 < y1) {    lineDirection = 3;    rectX1 = x2;    rectY1 = y2;    rectX2 = x1;    rectY2 = y1;}//Create a div with the 2 pointsvar div = document.createElement("div");div.id = name;div.style.position = "absolute";div.style.zIndex = 5;div.style.left = rectX1 + "px";div.style.top = rectY1 + "px";div.style.right = (window.innerWidth - rectX2) + "px";div.style.bottom = (window.innerHeight - rectY2) + "px";div.style.backgroundColor = color;//Add the div to the bodydocument.body.appendChild(div);}這有點多，但現(xiàn)在我想創(chuàng)建對角線。是的，我知道我需要一些公式來計算線的度數(shù)和長度，但現(xiàn)在我只想知道如何僅用 js 創(chuàng)建對角線。