util-helpers/lib/loadScript.js

一个基于业务场景的工具方法库

'use strict';

var tslib = require('tslib');
var ut2 = require('ut2');
var native = require('./utils/native.js');

var loadScript = function (_src, options) {
    var finalOptions;
    if (ut2.isObject(_src)) {
        finalOptions = _src;
    }
    else if (typeof _src === 'string') {
        finalOptions = tslib.__assign({ src: _src }, options);
    }
    else {
        finalOptions = options || {};
    }
    return new Promise(function (resolve, reject) {
        var container = document.head || document.getElementsByTagName('head')[0] || document.body;
        var script = document.createElement('script');
        var src = finalOptions.src, attrs = finalOptions.attrs, _a = finalOptions.destroyOnError, destroyOnError = _a === void 0 ? true : _a, onload = finalOptions.onload, onerror = finalOptions.onerror, restOptions = tslib.__rest(finalOptions, ["src", "attrs", "destroyOnError", "onload", "onerror"]);
        var props = tslib.__assign({ async: true, type: 'text/javascript' }, restOptions);
        for (var key in props) {
            script[key] = props[key];
        }
        if (typeof attrs === 'object') {
            native.objectKeys(attrs).forEach(function (key) {
                script.setAttribute(key, attrs[key]);
            });
        }
        if (src) {
            script.src = src;
            script.onload = function (ev) {
                onload === null || onload === void 0 ? void 0 : onload.call(this, ev);
                resolve(script);
            };
            script.onerror = function (ev) {
                this.onerror = this.onload = null;
                onerror === null || onerror === void 0 ? void 0 : onerror.call(this, ev);
                if (destroyOnError) {
                    container.removeChild(script);
                }
                reject(new URIError('Failed to load ' + this.src));
            };
        }
        container.appendChild(script);
        if (!src) {
            resolve(script);
        }
    });
};

module.exports = loadScript;