<script type="text/javascript"> function validate(){ var reg = new RegExp("^[0-9]*$"); var obj = document.getElementById("name"); if(!reg.test(obj.value)){ alert("请输入数字!"); } if(!/^[0-9]*$/.test(obj.value)){ a…
1.<script type="text/javascript"> 2. function validate(){ 3. var reg = new RegExp("^[0-9]*$"); 4. var obj = document.getElementById("name"); 5. if(!reg.test(obj.value)){ 6. alert("请输入数字!&q…
<script type="text/javascript"> function validate(){ var reg = new RegExp("^[0-9]*$"); var obj = document.getElementById("name"); if(!reg.test(obj.value)){ alert("请输入数字!"); } if(!/^[0-9]*$/.test(obj.value)){ a…
<script type="text/JavaScript"> function validate(){ var reg = new RegExp("^[0-9]*$"); var obj = document.getElementById("name"); if(!reg.test(obj.value)){ alert("请输入数字!"); } if…
<script type="text/javascript"> function validate(){ var reg = new RegExp("^[0-9]*$"); var obj = document.getElementById("name"); if(!reg.test(obj.value)){ alert("请输入数字!"); } if…
正则验证数字的方法: <script type="text/javascript"> function validate(){ var reg = new RegExp("^[0-9]*$"); var obj = document.getElementById("name"); if(!reg.test(obj.value)){ alert("请输入数字!"); } if(!/^[0-9]*$/.test(obj…
Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the problem statement to be ambiguous. You…
Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for the problem statement to be ambiguous. You…