eleven-methods/utils/ElevenOther.js

常用方法累计

module.exports = class ElevenOther {
    constructor() {}
    // 动态插入方法
    loadJS(url, callback) {
        var script = document.createElement('script'),
            fn = callback || function () {};
        script.type = 'text/javascript';
        //IE
        if (script.readyState) {
            script.onreadystatechange = function () {
                if (script.readyState == 'loaded' || script.readyState == 'complete') {
                    script.onreadystatechange = null;
                    fn();
                }
            };
        } else {
            //其他浏览器
            script.onload = function () {
                fn();
            };
        }
        script.src = url;
        document.getElementsByTagName('head')[0].appendChild(script);
    }
    findField(field, arrs, successArr = []) {
        var successArr = successArr
        if (!(arrs instanceof Array)) return new Error('传入参数需为数组')
        arrs.forEach(i => {
            var multiArrs = []
            for (let k in i) {
                if ((i[k] instanceof Array) && i[k].length) {
                    multiArrs.push(i[k])
                }
                if (k === field) {
                    successArr.push(i[k])
                }
                if (multiArrs.length) {
                    multiArrs.forEach(m => {
                        findField(field, m, successArr)
                    })
                }
            }
        })
        return successArr
    }
}