Javascript tips to generate html elements_javascript tips

//createElement() creates the input element into the obj object
var obj = document.createElement('input');
//Select the previous element to generate the location
var before = document.getElementById('before');
//Set obj Element name, value
obj.name='name';
obj.value='value';
//setAttribute can freely define attributes, not only id and type, name and value can also be This definition
obj.setAttribute('id','idname');
obj.setAttribute('type','typename');
//Add obj
after the previous element before .appendChild(obj);

document.write("");