如何获取select得值判断第一个字母是不是数字

Question

如题，谢谢大家

Answer 1

HTML<select id='test'>&nbsp; &nbsp; <option>hello boy</option>&nbsp; &nbsp; <option>9ello boy</option></select>JSvar s = document.getElementById('test');var v = s.value;// 检查的正则表达式var reg = /^\d/;if (reg.test(v)) {&nbsp; &nbsp; console.log("第一个字符是数字！");} else {&nbsp; &nbsp; console.log("第一个字符不是数字！");}