摘要：
正则转义字符： Table 10-2. Regular expression character classesCharacter Matches[...] Any one character between the brackets.[^...] Any one character not between the brackets.. Any character except newline or another Unicode line terminator.\w Any ASCII word character. Equivalent to [a-zA-Z0-9_].\W Any ch. 阅读全文
摘要：
String.prototype.trim = String.prototype.trim || function () {if (!this) return this;//Don't alert the empty string/* this.replace(/^\s+|\s+$/g, "") 和 this.replace(/^\s+/,'').repalce(/\s+$/,'');相比.后者比前者快150ms左右，如果字符串更长可能差距会更大，所以决定使用高效的方法*/this.replace(/^\s+/, '' 阅读全文