获取html表单内容,js获取form表单所有数据

//获取指定form中的所有的对象

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;

}

//获取单个input中的【name,value】数组

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;

}

//组合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

results.push(key + '=' + encodeURIComponent(values[i]));

}

return results.join('&');

}

}

//调用方法

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('&');

}

interest:PIU DSS DDR

function getFormInfo(){

var params = serializeForm('login');

alert(params);

}

标签：case,function,return,form,js,element,var,表单,parameter

来源： https://www.cnblogs.com/web-record/p/10455409.html