JavaScript PDF，如果字段A包含数据，则根据需要设置B，C，D字段

Question

我发现了一个代码，如果必填字段为空，则会在pdf中推送消息。

但是，当涉及到条件其他必填字段时；当某个字段不为空时，弹出消息将需要一些子字段。

我似乎正在遇到一些无法使用的阻止程序。不确定该怎么做，因为我对JavaScript不太熟悉。希望有人可以帮助我。预先感谢

        //code for pushing message when a required field is empty (Code that works)

    var fld1 = this.getField('COMPANY NAME');
var fld2 = this.getField('ACCOUNT NUMBER');
var fld3 = this.getField('EMAIL ADDRESS');

var errMsgs = [];  
var firstBadField = null;  

if (fld1.valueAsString == fld1.defaultValue) {  
    errMsgs.push("Please key in your company name.");  
    firstBadField = fld1;  
}  

if (fld2.valueAsString == fld2.defaultValue) {  
    errMsgs.push("Please enter your account number.");  
    firstBadField = fld2;  
}  

if (fld3.valueAsString == fld3.defaultValue) {  
    errMsgs.push("Please enter your email address .");  
    firstBadField = fld3;  
}  

if (errMsgs.length>0) {  
    app.alert(errMsgs.join("\n\n"));  
    firstBadField.setFocus();  


//Code for when field no_1 is not empty then field Name_1, Name_2, and Name_3 is required (Code which is not working)

var rgEmptyTest = /^\s*$/;

function testSelfRequiredField (no_1, NAME_1) {

if (rgEmptyTest.test(no_1)){

this.getField(NAME_1).required = true;
this.getField(NAME_2).required = true;
this.getField(NAME_3).required = true;

this.getField(NAME_1).value = ""; 
this.getField(NAME_2).value = ""; 
this.getField(NAME_3).value = ""; 

errMsgs.push("Please enter User name.");  

} else {

this.getField(NAME_1).required = false; 
this.getField(NAME_2).required = false; 
this.getField(NAME_3).required = false;        
}
}

} else {
var cToAddr = "EMAIL@gmail.com"; 

var cSubLine = " Update Form - " + this.getField("ACCOUNT NUMBER").value + this.getField("COMPANY NAME").value;
var cBody = " Details for Request, Account - " + this.getField("ACCOUNT NUMBER").value + this.getField("ACCOUNT NUMBER").value +"," + this.getField("COMPANY NAME").value + " , " + this.getField("COMPANY NAME").value +" , "+ this.getField("COMPANY NAME").value;  

  this.mailDoc({  
  bUI: true,  
  cTo: cToAddr,  
  cSubject: cSubLine,  
  cMsg: cBody  
    });
}