2011年7月1日
js拾遗
摘要： typeof 运算符把类型信息当作字符串返回。typeof 返回值有六种可能： "number," "string," "boolean," "object," "function," 和 "undefined."typeof 语法中的圆括号是可选项。alert(typeof window.jQuery); //function if (window.jQuery) { alert("jQuery... 阅读全文
posted @ 2011-07-01 22:31 队长 阅读(203) 评论(0) 推荐(0)