@meta2d/core/src/utils/file.js

@meta2d/core: Powerful, Beautiful, Simple, Open - Web-Based 2D At Its Best .

export async function fileToBase64(file) {
    return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onload = (e) => {
            resolve(e.target.result);
        };
        reader.onerror = (e) => {
            reject(e);
        };
        reader.readAsDataURL(file);
    });
}
export async function uploadFile(file, url, params, headers) {
    const formData = new FormData();
    // 后端接受的 formData 文件属性名一定为 file
    formData.append('file', file);
    if (params) {
        for (const key in params) {
            if (params.hasOwnProperty(key)) {
                formData.append(key, params[key]);
            }
        }
    }
    const res = await fetch(url, {
        method: 'POST',
        headers,
        body: formData,
    });
    // 后端返回的一级属性中，必须包含一个名为url的属性
    return (await res.json()).url;
}
export function loadCss(url, success, error) {
    var link = document.createElement('link');
    link.href = url;
    link.rel = 'stylesheet';
    success && (link.onload = success);
    error && (link.onerror = error);
    document.head.appendChild(link);
}
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