1,只允许输入数字和小数点。 <inputonKeypress="return (/[\d.]/.test(String.fromCharCode(event.keyCode)))"style="ime-mode:Disabled"> 2,判断的更详细一些,甚至22..2这样不算数字也判断得出来 <script> <br>functioncheck(){ <br>vari=document.getEl
Do you want to determine if an element is actually hidden (e.g. visible) or if it is in fact a "hidden" input element? Both of these are slightly different however, you can use thejQuery .is() functionto check this : // Check if an element is visible on the screen (e.g. not...
-->用户名:<input type="text"name="userName"onblur="checkUserName()"/><span id="userNameSpan"></span><br/><br/><!--为了演示清楚,密码这里也用type="text"了,其实应该用type="password"的-->密码:<input type="text"name="pwd"onblur="checkPwd()"/><span id="userPwdSpan"></span></...
关于input 身上的东西总算没有了,textarea 和 input 区别不大,这里就不赘叙了,关于文本域的自适应高度后面会讲。 代码逻辑 现在将重点关注在script标签上,从源码可以看出有 300 多行代码都是关于 input 逻辑的。 头部import import emitter from 'element-ui/src/mixins/emitter' import Migrating from 'element-...
JS代码判断checkbox是否选中操作: functionverify(){varisCheck=$("#check").get(0).checked;//获取选中状态,返回true或者falseif(!isCheck){ document.getElementById("agreeRule").innerHTML="请同意相关条款";return; }else{//相关操作。。。}
If caused by a click, the clicked element is available as the relatedTarget property of the event. hide.bs.modal This event is fired immediately when the hide instance method has been called. hidden.bs.modal This event is fired when the modal has finished being hidden from the user (will ...
realFileElement.innerText = `${}文件的类型是:${ isPNG(uint8Array) ? "image/png" : file.type }`; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 以上示例成功运行后,对应的检测结果如下图所示 ...
If a number is supplied, delay is applied to both hide/show Object structure is: delay: { show: 500, hide: 100 } container string | false false Appends the tooltip to a specific element container: 'body' 注意! 可以针对单个工具提示指定单独的data属性。 标记 <a href="#" data-toggle="...
When a function is used to determine the placement, it is called with the tooltip DOM node as its first argument and the triggering element DOM node as its second. The this context is set to the tooltip instance. selector string false If a selector is provided, tooltip objects will be ...
getElementById("password").value; if (password.length<8){ alert("密码至少为8位!");} var inputCode = document.getElementById("input").value.toUpperCase(); //取得输入的验证码并转化为大写 if(inputCode.length <= 0) { //若输入的验证码长度为0 alert("请输入验证码!"); //则弹出请输入...