form表单序列化详解（推荐）

form的序列化，即将表单中的键值序列化为可提交的字符串表单<formid="target"><selectname=

form的序列化，即将表单中的键值序列化为可提交的字符串

表单

 <form id="target">
 <select name="age">
 <option value="age1">20</option>
 <option value="age2" selected>21</option>
 </select>
 <input name="name" value="Cynthia">
 <label>passsword</label>
 <input type="password" name="password" value="123456">
 <input type="hidden" name="salery" value="3333">
 <textarea name="description" cols="15" rows="5">description</textarea>
 <input type="checkbox" name="hobby" value="football" checked> Football
 <input type="checkbox" name="hobby" value="basketball"> Basketball
 <input type="radio" name="sex" value="Female" checked> Female
 <input type="radio" name="sex" value="Male"> Male
 </form>

方法一 

function serializeForm1(form){ 
 var setForm = ""; 
 for(var key in form){ 
 if(form.hasOwnProperty(key)){ 
 setForm += '"'+form[key].name+'"'+':'+'"'+form[key].value + '"'+',';
 }
 }
 setForm = "{" + setForm.slice(0,setForm.length -1) + "}";
 console.log(setForm);
 // console.log(JSON.parse(setForm));
 return JSON.parse(setForm);
 }
 
 // 调用
 var oForm = document.getElementById('target');
 console.log(serializeForm3(oForm));

结果：

方法二

 function serializeForm2(form) {
 var parts = [];
 for (var i = 0, i1 = form.elements.length; i < i1; i++) {
 var field = form.elements[i];
 switch (field.type) {
 case 'select-one':
 case 'select-multiple':
 if (field.type.length) {
 for (var j = 0, j1 = field.options.length; j < j1; j++) {
 var option = field.options[j];
 if (option.selected) {
 var optionValue = '';
 if (option.hasAttribute('value') && option.attributes['value'].specified) {
 //specified表明是否有此属性，有的话返回true，若定义了此属性但尚未添加到元素中也返回true。
 optionValue = option.value;
 } else {
 optionValue = optionValue.text;
 }
 parts.push(encodeURIComponent(field.name) + '=' + encodeURIComponent(optionValue));
 }
 }
 }
 break;
 case undefined:
 case 'file':
 case 'submit':
 case 'reset':
 case 'button':
 break;
 case 'radio':
 case 'checkbox':
 if(!field.checked){
 break;
 }else{
 parts.push(encodeURIComponent(field.name) + '=' + encodeURIComponent(field.dataset['index']));
 break;
 }
 default:
 if(field.name.length){
 parts.push(encodeURIComponent(field.name) + '=' + encodeURIComponent(field.value));
 }
 }
 }
 return parts.join('&');
 }
 
 // 调用
 var oForm = document.getElementById('target');
 console.log(serializeForm2(oForm));

结果：

方法三

 function serializeForm3(form){
 if(!form||form.tagName.toUpperCase()!='FORM'){
 return false;
 }
 var res=[];
 var tag,tagType,tagVal,tagName;
 for(var i=0;i<form.length;i++){
 tag=form[i];
 tagType=form[i].type;
 tagVal=form[i].value;
 tagName=form[i].name; 
 var reg1=/['textarea'|'text'|'passsword'|'label']/g;
 var reg2=/['radio'|'checkbox']/g;
 var reg3=/['select']/g;
 if(reg1.test(tagType)){
 res.push(encodeURIComponent(tagName)+"="+encodeURIComponent(tagVal));
 }else if(reg2.test(tagType)&&tag.checked){
 res.push(encodeURIComponent(tagName)+"="+encodeURIComponent(tagVal)); 
 }else if(reg3.test(tagType)){
 for(var j=0;j<tag.options.length;j++){
 if(tag.options[j].selected){
 res.push(encodeURIComponent(tagVal)+"="+encodeURIComponent(tag.options[j].value||tag.options[j].text)); 
 }
 }
 }else{}
 } 
 return res.join(" & ");
 }
 
 // 调用
 var oForm = document.getElementById('target');
 console.log(serializeForm3(oForm));

结果：

以上就是本文的全部内容啦，希望对大家有所帮助~

form表单序列化提交 表单序列化是什么