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有一个 textarea,希望在用户输入为空时禁止提交,用trim()只能清除两边的空格。 但是,我在输入了回车、全角空格的情况下,还是会被被正常提交,怎么办?
trim()
文件框中包含半角和全角空格,换行符http://jsfiddle.net/greatghoul/BXr6e/
前台 :
String.replace(/(^\s*)|(\s*$)|(\n)/g, "");
后台别忘也需要验证
文件框中包含半角和全角空格,换行符
http://jsfiddle.net/greatghoul/BXr6e/
前台 :
后台别忘也需要验证