umy-ui/lib/utils/types.js

一个基于 vue 的 PC 端表格UI库，解决万级数据渲染卡顿问题，过万数据点击全选卡顿，等等问题

'use strict';

exports.__esModule = true;
exports.isString = isString;
exports.isNumber = isNumber;
exports.isObject = isObject;
exports.isHtmlElement = isHtmlElement;
function isString(obj) {
  return Object.prototype.toString.call(obj) === '[object String]';
}

function isNumber(obj) {
  return Object.prototype.toString.call(obj) === '[object Number]';
}

function isObject(obj) {
  return Object.prototype.toString.call(obj) === '[object Object]';
}

function isHtmlElement(node) {
  return node && node.nodeType === Node.ELEMENT_NODE;
}

var isFunction = exports.isFunction = function isFunction(functionToCheck) {
  var getType = {};
  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
};

var isUndefined = exports.isUndefined = function isUndefined(val) {
  return val === void 0;
};

var isDefined = exports.isDefined = function isDefined(val) {
  return val !== undefined && val !== null;
};