vislite/lib/mergeOption/index.es.js

灵活、快速、简单的数据可视化交互式跨端前端库

var toString = Object.prototype.toString;
function getType(value) {
    if (value == null) {
        return value === undefined ? '[object Undefined]' : '[object Null]';
    }
    return toString.call(value);
}
function isPlainObject(value) {
    if (value === null || typeof value !== 'object' || getType(value) != '[object Object]') {
        return false;
    }
    if (Object.getPrototypeOf(value) === null) {
        return true;
    }
    var proto = value;
    while (Object.getPrototypeOf(proto) !== null) {
        proto = Object.getPrototypeOf(proto);
    }
    return Object.getPrototypeOf(value) === proto;
}

function mergeOption(oldOption, newOption) {
    (function doit(oldOption, newOption) {
        for (var key in newOption) {
            var value = newOption[key];
            if (isPlainObject(value)) {
                if (!oldOption[key])
                    oldOption[key] = {};
                doit(oldOption[key], newOption[key]);
            }
            else {
                oldOption[key] = value;
            }
        }
    })(oldOption, newOption);
}

export { mergeOption as default };