首頁 > 開發者 > JavaScript
話不多說，跟小編一起來看看吧
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title></title> <script type="text/javascript"> function validation() { var val = document.getElementById("txtNumber").value; var regu = /^((-\d+)|(0+))$/; if (val != "") { if (!regu.test(val)) { document.getElementById("labResult").style.color = "red"; document.getElementById("labResult").innerHTML = "驗證失敗！"; } else { document.getElementById("labResult").style.color = "green"; document.getElementById("labResult").innerHTML = "驗證成功！"; } } } </script></head><body> <input id="txtNumber" name="txtNumber" type="text" /> <input id="btnValidation" name="btnValidation" type="button" value="校正" onclick="validation()" /> 驗證結果：<label id="labResult" ></label></body></html>
以上就是本文的全部內容，希望本文的內容對大家的學習或者工作能帶來一定的協助，同時也希望多多支援雲棲社區！
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
