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Stolen from: https://code.google.com/p/form-serialize/ Offers to serialize a form without a library and using only DOM scripting.
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| function serialize(form) { | |
| if (!form || form.nodeName !== "FORM") { | |
| return; | |
| } | |
| var i, j, q = []; | |
| for (i = form.elements.length - 1; i >= 0; i = i - 1) { | |
| if (form.elements[i].name === "") { | |
| continue; | |
| } | |
| switch (form.elements[i].nodeName) { | |
| case 'INPUT': | |
| switch (form.elements[i].type) { | |
| case 'text': | |
| case 'hidden': | |
| case 'password': | |
| case 'button': | |
| case 'reset': | |
| case 'submit': | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value)); | |
| break; | |
| case 'checkbox': | |
| case 'radio': | |
| if (form.elements[i].checked) { | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value)); | |
| } | |
| break; | |
| case 'file': | |
| break; | |
| } | |
| break; | |
| case 'TEXTAREA': | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value)); | |
| break; | |
| case 'SELECT': | |
| switch (form.elements[i].type) { | |
| case 'select-one': | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value)); | |
| break; | |
| case 'select-multiple': | |
| for (j = form.elements[i].options.length - 1; j >= 0; j = j - 1) { | |
| if (form.elements[i].options[j].selected) { | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].options[j].value)); | |
| } | |
| } | |
| break; | |
| } | |
| break; | |
| case 'BUTTON': | |
| switch (form.elements[i].type) { | |
| case 'reset': | |
| case 'submit': | |
| case 'button': | |
| q.push(form.elements[i].name + "=" + encodeURIComponent(form.elements[i].value)); | |
| break; | |
| } | |
| break; | |
| } | |
| } | |
| return q.join("&"); | |
| } |
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| // From: http://onwebdev.blogspot.com/2011/05/serializing-form-without-jquery.html | |
| function serializeForm(form) { | |
| form = document.getElementById(form) || document.forms[0]; | |
| var elems = form.elements; | |
| var serialized = [], i, len = elems.length, str=''; | |
| for(i = 0; i < len; i += 1) { | |
| var element = elems[i]; | |
| var type = element.type; | |
| var name = element.name; | |
| var value = element.value; | |
| switch(type) { | |
| case 'text': | |
| case 'radio': | |
| case 'checkbox': | |
| case 'textarea': | |
| case 'select-one': | |
| str = name + '=' + value; | |
| serialized.push(str); | |
| break; | |
| default: | |
| break; | |
| } | |
| } | |
| return serialized.join('&'); | |
| } |
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