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[英]HTML5 Canvas - how to get absolute position of an object after rotate?
[英]How to get position to be absolute rather than 'undefined' after using setAttribute
我正在嘗試將名為“spell”的數組的屬性分配給位於 div 容器中的新創建的 img 元素。
for (let i = 0; i <spell.length; i++){
let styles = spell[i]
let container = document.getElementById('imagecontainer');
let newImg = document.createElement('img');
let top = styles.top;
let left = styles.left;
let imgSrc = styles.src;
newImg.setAttribute('width','25px');
newImg.setAttribute('left',left);
newImg.setAttribute('top',top);
newImg.setAttribute('src',imgSrc);
newImg.setAttribute('height','25px')
newImg.setAttribute('position','absolute');
console.log(newImg.position)
container.appendChild(newImg);
}
但是,當我運行代碼時,它會將所有圖像的 newImg.position 記錄為未定義。 我不確定哪里出了問題
設置style屬性的屬性: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/style
const spell = [{ top: "10px", left: "10px", src: "foo.png" }, { top: "50px", left: "50px", src: "bar.png" }]; const container = document.getElementById('imagecontainer'); for (let i = 0; i < spell.length; i++) { let styles = spell[i]; let newImg = document.createElement('img'); let top = styles.top; let left = styles.left; let imgSrc = styles.src; newImg.style.width = '25px'; newImg.style.height = '25px'; newImg.style.top = top; newImg.style.left = left; newImg.style.position = 'absolute'; newImg.setAttribute("src", imgSrc); console.log(newImg.style.position); container.appendChild(newImg); }
<div id="imagecontainer"></div>
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