HTML DOM 输入复选框表单属性
HTML DOM 输入复选框表单属性返回包含输入复选框的表单。
语法
以下是语法 −
返回对form对象的引用
inputCheckboxObject.form
示例
我们来看一个 HTML DOM 输入复选框表单属性的示例 −
<!DOCTYPE html> <html> <head> <title>Student Details</title> </head> <body> <form id="Student-Form"> <div> <input type="text" name="fullName" placeholder="eg: John Doe"> Show Form ID: <input id="formID" type="checkbox" name="formID"> </div> </form> <button onclick="getFormID()">Get ID of form containing this Checkbox</button> <div id="showResult"></div> <script> function getFormID(){ var checkboxFilter = document.getElementById("formID"); var showResultDiv = document.getElementById("showResult"); if(checkboxFilter.checked == true){ showResultDiv.textContent = 'Form ID: ' + checkboxFilter.form.id; } else { showResultDiv.textContent = 'Check the checkbox'; } } </script> </body> </html>
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输出
将产生以下输出 −
在选中“显示表单 ID”复选框之前 −
在选中“显示表单 ID”复选框之后 −
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