function serialize(form){
var parts = [],
field = null,
i,
len,
j,
optLen,
option,
optValue;
for (i=0, len=form.elements.length; i < len; i++){
field = form.elements[i];
switch(field.type){
case "select-one":
case "select-multiple":
if (field.name.length){
for (j=0, optLen = field.options.length; j < optLen; j++){
option = field.options[j];
if (option.selected){
optValue = "";
if (option.hasAttribute){
optValue = (option.hasAttribute("value") ? option.value : option.text);
} else {
optValue = (option.attributes["value"].specified ? option.value : option.text);
}
//parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(optValue));
parts.push(field.name + "=" + optValue);
}
}
}
break;
case undefined: //fieldset
case "file": //file input
case "submit": //submit button
case "reset": //reset button
//case "button": //custom button
break;
case "radio": //radio button
case "checkbox": //checkbox
if (!field.checked){
break;
}
/* falls through */
default:
//don't include form fields without names
if (field.name.length){
// parts.push(encodeURIComponent(field.name) + "=" + encodeURIComponent(field.value));
parts.push(field.name + "=" + field.value);
}
}
}
return parts.join("&");
}
本文介绍了一种用于将HTML表单元素序列化为URL参数字符串的方法。该方法能够处理多种类型的表单字段,包括单选框、复选框、下拉菜单等,并排除了不带名称或不需要序列化的字段类型,如文件输入、提交按钮等。
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