jx.dom.get.value

master
steve 10 years ago
parent 597535a77f
commit b43462ad76

113
dom.js

@ -1,5 +1,5 @@
/** /**
* The Phi Technology LLC, * The Phi Technology LLC, Steve L. Nyemba <steve@the-phi.com>
* Javascript-x framework version 0.1 * Javascript-x framework version 0.1
* *
* Handling of DOM objects will rely on DOM object identifiers (ID) with a few exceptions * Handling of DOM objects will rely on DOM object identifiers (ID) with a few exceptions
@ -11,17 +11,120 @@ if(!jx){
var jx = {} var jx = {}
} }
jx.dom = {} ; jx.dom = {} ;
/**
* Determines if a DOM object exists or not
* @param {type} id
* @returns {Boolean}
*/
jx.dom.exists = function(id){ jx.dom.exists = function(id){
return document.getElement(id) != null || document.getElementsByName(id) != null ; return document.getElement(id) != null || document.getElementsByName(id) != null ;
} }
/**
* This function allow extraction from an select tag, if mutil selection is enabled an array is returned otherwise a scalar or string
* The function also supports accessing a user defined attribute if specified otherwise it will use the default 'value', text can be specified
* @param {type} id
* @param {type} field
* @returns {Array|jx.dom.get.dropdown.value}
*/
_dropdownvalue = function(id,field){
var _dom = document.getElementById(id) ;
field = (field)?field:'value'
var value = null;
if(field!= null && _dom != null){
value = []
var option = 0;
for(var i=0; i < _dom.options.length; i++){
option = _dom.options[i] ;
if(option.selected){
value.push(option[field])
}
}
}
if(value.length == 0){
value = 0
}else if (value.length == 1){
value = value[0]
}
return value;
}
/**
* This function returns a value for checkboxes given a name
* @param {type} id name of the checkboxes
* @returns {value}
*/
_checkboxvalue = function(id){
ldoms = document.getElementsByName(id) ;
value = null;
for(var i=0; i < ldoms.length; i++){
if(ldoms[i].checked == true){
value = ldoms[i].value;
break;
}
}
return value;
}
_radiovalue = function(id){
return _checkboxvalue(id);
}
/**
* Returns the input value of an input with type == text|password
* @param {type} id
* @returns {document@call;getElementById.value}
*/
_inputvalue = function(id){
_input = document.getElementById(id) ;
return _input.value ;
}
_spanvalue = function(id){
_input = document.getElementById(id) ;
return _input.innerHTML ;
}
jx.dom.get = {} ; jx.dom.get = {} ;
/** /**
* This function will return the value of a dom object regardless of the object * This function will return the value of a dom object regardless of the object
* @param {type} id * @param {type} id
* @returns {undefined} * @returns {undefined}
*/ */
jx.dom.get.value = function(id){ jx.dom.get.value = function(id){
obj = document.getElementById(id) ;
if(obj == null){
obj = document.getElementsByName(id) ;
if (obj != null){
obj = obj[0] ;
}
}
//-- at this point we've tried two methods
if(obj == null){
return null;
}
tag = obj.tagName ;
if(tag.match(/input/i)){
if(obj.type.match(/text|password/i)){
key = 'INPUT'
}else {
key = obj.type ;
}
}else{
key = tag ;
}
key = key.toUpperCase();
pointer = {} ;
pointer['SELECT'] = _dropdownvalue ;
pointer['SPAN'] = _spanvalue;
pointer['DIV'] = _spanvalue;
pointer['CHECKBOX']= _checkboxvalue;
pointer['RADIO'] = _radiovalue ;
pointer['INPUT'] = _inputvalue;
return pointer[key](id)
} }
jx.dom.get.children = function(id){} jx.dom.get.children = function(id){}
@ -33,5 +136,7 @@ jx.dom.set = {} ;
* @returns {undefined} * @returns {undefined}
*/ */
jx.dom.set.value= function(id,value){ jx.dom.set.value= function(id,value){
obj = document.getElementById(id) ;
} tag = obj.tagName ;
}

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