复制代码 代码如下: var is = function(obj,type){ var toString=Object.prototype.toString,undefined; return obj===null&&type==='Null'|| obj===undefined&&type==='Undefined'|| toSt...
2019-12-24技术教程javascript,JavaScript教程,js教程,类型判断首先定义了 全局变量class2type = {}; rdigit = /\d/,//正则判断是否是数字 toString = Object.prototype.toString; 通过jQuery.each,定义class2type的属性和值: 复制代码 代码如下: jQuery.each("Bo...
2019-12-24技术教程JavaScript教程,js教程,类型判断1 判断是否为数组类型复制代码 代码如下:<STRONG><script type="text/javascript"> //<![CDATA[ var a=[0]; document.write(isArray(a),'<br/>'); function isArray(obj){ retu...
2019-12-24技术教程javascript,JavaScript教程,js教程,类型判断1. isFunction中typeof的不靠谱 源码: var isFunction = function isFunction( obj ) { // Support: Chrome <=57, Firefox <=52 // In some browsers, typeof returns "function" for HTML <object&g...
2019-11-12技术教程javascript,JavaScript教程,js教程,类型判断