用于检测非ascii字符的Java Script正则表达式 [英] Java Script regular expression for detecting non-ascii characters

问题描述

我们如何使用java脚本限制在特定文本字段中使用非ascii字符..？提前谢谢...

How can we use java script to restrict the use of non-ascii characters in a specific text field..? thanks in advance...

推荐答案

Ascii被定义为000-177（八进制）范围内的字符，因此

Ascii is defined as the characters in the range of 000-177 (octal), therefore

function containsAllAscii(str) {
    return  /^[\000-\177]*$/.test(str) ;
}

http://jsfiddle.net/V5e4B/1/

您可能不想接受非打印字符 \000-\ 037 ，也许你的正则表达式应该是 / \040-\0176 /

You probably don't want to accept non-printing characters \000-\037, maybe your regex should be /\040-\0176/

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