Write two common functions. use JavaScript to obtain form data.

During this time, JavaScript is often used to obtain the submitted data in various forms. Considering code consistency and logic simplification, the following two JS functions are created to obtain data in form in a unified manner. Data is obtained based on formid and inputid.

The function call method is as follows.

Obtain data:

VaR charstring = getvalue (formid, 'charstring ');
VaR testcondition = getvalue (formid, 'testcondition ');
VaR hvalue = getvalue (formid, 'hvalue ');
VaR lvalue = getvalue (formid, 'lvalue ');
VaR hunitid = getvalue (formid, 'hunitid ');
VaR logicterm = getvalue (formid, 'logicter ');

Set Data
If (charstring) setvalue (formid, 'charstring', charstring );

The Form format is as follows:

Test condition <textarea name = "testcondition" class = "inputsingle" id = "testcondition"> </textarea>
<! -- <Textarea name = "xmldata" class = "inputsingle" id = "xmldata"> </textarea> -->
<Br>

Low-value data <input class = "inputlow" name = "lvalue" id = "lvalue" require = "false" datatype = "double" MSG = "low-value data must be numerical data "> <br>
Operator symbol <select name = "logicterm" id = "logicterm">
<Option value = "~ "> Between </option>
<Option value = "="> equal to </option>
<Option value = ">="> greater than or equal to </option>
<Option value = "<="> less than or equal to </option>
<Option value = ">"> greater than </option>
<Option value = "<"> less than </option>
<Option value = ""> none </option>
</SELECT> <br>

As shown above, all input values of different types are consistent with the set values. Note that each input must have an id attribute, and form must also

Two JS functions are supported:

// Ignore the type and set the value of input data in Form
Function setvalue (formid, inputid, strvalue ){
VaR L = new number ();
If (! Strvalue) return;
If (strvalue = '') return;
Eval ('L = Document. '+ formid +'. elements. length ')
For (VAR I = 0; I <L; I ++ ){
VaR tempid = new string ();
VaR temptype = new string ();
Eval ('tempid = Document. '+ formid +'. elements [I]. Name ;');
Eval ('temptype = Document. '+ formid +'. elements [I]. type ;');
If (tempid = inputid ){
If (temptype = 'text '){
Eval ('document. '+ formid +'. elements [I]. value = strvalue ;');
} Else if (temptype = 'textarea '){
Eval ('document. '+ formid +'. elements [I]. value = strvalue ;');
} Else if (temptype = 'den den '){
Eval ('document. '+ formid +'. elements [I]. value = strvalue ;');
} Else if (temptype = 'select-one '){
VaR optionlen = new number ();
Eval ('optionlen = (document. '+ formid +'. elements [I]. Options. Length )');
For (var j = 0; j <optionlen; j ++ ){
Eval ('If (document. '+ formid + '. elements [I]. options ['+ J +']. value = strvalue) document. '+ formid + '. elements [I]. selectedindex = '+ J + ';');
}
} Else if (temptype = 'Radio '){
Eval ('If (document. '+ formid + '. elements [I]. value = strvalue) document. '+ formid + '. elements [I]. checked = true ;');
} Else if (temptype = 'checkbox '){
VaR strvalues = (',' + strvalue + ','). Split (',');
For (var j = 0; j <strvalues. length; j ++ ){
If (! (Strvalues [J] = '')){
Eval ('If (document. '+ formid + '. elements [I]. value = strvalues [J]) document. '+ formid + '. elements [I]. checked = true ;');
}
}
} Else if (temptype = 'select-multiple '){
VaR strvalues = (',' + strvalue + ','). Split (',');
VaR optionlen = new number ();
Eval ('optionlen = (document. '+ formid +'. elements [I]. Options. Length )');
For (var k = 0; k <optionlen; k ++ ){
For (var j = 0; j <strvalues. length; j ++ ){
Eval ('If (document. '+ formid + '. elements [I]. options [K]. value = strvalues [J]) document. '+ formid + '. elements [I]. options [K]. selected = true ')
}
}
}
}
}
}
// Ignore the type and set the value of the input data in Form
Function getvalue (formid, inputid ){
VaR tempvalue = new string ();
VaR L = new number ();
Eval ('L = Document. '+ formid +'. elements. length ')
For (VAR I = 0; I <L; I ++ ){
VaR tempid = new string ();
VaR temptype = new string ();
Eval ('tempid = Document. '+ formid +'. elements [I]. Name ;');
Eval ('temptype = Document. '+ formid +'. elements [I]. type ;');
// Alert (tempid );
// Alert (temptype );
If (tempid = inputid ){
If (temptype = 'text '){
Eval ('tempvalue = Document. '+ formid +'. elements [I]. value ;');
} Else if (temptype = 'textarea '){
Eval ('tempvalue = Document. '+ formid +'. elements [I]. value ;');
} Else if (temptype = 'den den '){
Eval ('tempvalue = Document. '+ formid +'. elements [I]. value ;');
} Else if (temptype = 'select-one '){
Eval ('tempvalue = document. '+ formid + '. elements [I]. options [document. '+ formid + '. elements [I]. selectedindex]. value ;');
} Else if (temptype = 'Radio '){
Eval ('If (document. '+ formid +'. elements [I]. Checked) tempvalue = Document. '+ formid +'. elements [I]. value ;');
} Else if (temptype = 'checkbox '){
VaR checkvalue = new string ();
Checkvalue = "";
Eval ('If (document. '+ formid + '. elements [I]. checked = true) {checkvalue = document. '+ formid + '. elements [I]. value }');
If (checkvalue = ''){
} Else {
If (tempvalue = ''){
Tempvalue + = checkvalue;
} Else {
Tempvalue + = ',' + checkvalue;
}
}
} Else if (temptype = 'select-multiple '){
// Calculate the number of options
// Cyclically checks the number and
VaR optionlen = new number ();
Eval ('optionlen = (document. '+ formid +'. elements [I]. Options. Length )');
For (var j = 0; j <optionlen; j ++ ){
VaR checkvalue = new string ();
Checkvalue = "";
Eval ('If (document. '+ formid + '. elements [I]. options [J]. selected) checkvalue = (document. '+ formid + '. elements [I]. options [J]. value );');
If (checkvalue = ''){
} Else {
If (tempvalue = ''){
Tempvalue + = checkvalue;
} Else {
Tempvalue + = ',' + checkvalue;
}
}
}
// Check data cyclically
}
}
}
Return tempvalue;
}