我要评论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~
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