Use js in HTML to get the form value passed through GET and POST methods (that is, add ?a=b&c=d and so on the URL).
For the commonly used method of obtaining forms, we often write some code repeatedly. The code posted to you today can be called directly as a public method. It can improve everyone's development efficiency.
Js code
<script type="text/javascript"> //Get all <input> objects in the specified form function getElements(formId) { var form = document.getElementById(formId); var elements = new Array(); var tagElements = form.getElementsByTagName('input'); for (var j = 0; j < tagElements.length; j++){ elements.push(tagElements[j]); } return elements; } //Get the [name,value] array function inputSelector(element) { if (element.checked) return [element.name, element.value]; } function input(element) { switch (element.type.toLowerCase()) { case 'submit': case 'hidden': case 'password': case 'text': return [element.name, element.value]; case 'checkbox': case 'radio': return inputSelector(element); } return false; } //Combined URL function serializeElement(element) { var method = element.tagName.toLowerCase(); var parameter = input(element); if (parameter) { var key = encodeURIComponent(parameter[0]); if (key.length == 0) return; if (parameter[1].constructor != Array) parameter[1] = [parameter[1]]; var values = parameter[1]; var results = []; for (var i=0; i<values.length; i++) { results.push(key + '=' + encodeURIComponent(values[i])); } return results.join('&'); } } //Calling method function serializeForm(formId) { var elements = getElements(formId); var queryComponents = new Array(); for (var i = 0; i < elements.length; i++) { var queryComponent = serializeElement(elements[i]); if (queryComponent) queryComponents.push(queryComponent); } return queryComponents.join('&'); } </script>Js code
function getFormInfo(){ var params = serializeForm('login'); alert(params); }Html code
<body> <form id="login" name="login" method="post" action="result.jsp"> <input name="user" type="text"/> <input name="sex" type="radio" value="man"/> <input name="sex" type="radio" value="woman"/> interest:<input type="checkbox" name="interest" value="piu">PIU <input type="checkbox" name="interest" value="dss">DSS <input type="checkbox" name="interest" value="ddr">DDR<br> <input type="hidden" name="from" value="welcome"><br> <input type="button" name="submit" value="submit" onclick="getFormInfo();"> </form> </body>
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The simple way to obtain all the data of form in the above article js is the entire content shared by the editor. I hope it can give you a reference and I hope you can support Wulin.com more.