CODEWITHSUNDEEP
javascript
Simply Innovative
Simply Innovative

Reputation: 191

How to pass multiple parameters to a function dynamically?

I have created a Util API's to create function object and to invoke its function API's

function FunctionUtils() {

}

FunctionUtils.createFunctionInstance = function(functionName) {
     var obj = FunctionUtils.createFunctionInstanceDescend(window, functionName);
     return new obj();
}

FunctionUtils.createFunctionInstanceDescend = function(obj, path) {
     var parts = path.split('.');

     for(var i = 0; i < parts.length; i++) {
         obj = obj[parts[i]];
     }

     return obj;
}


FunctionUtils.invokeAndInflate = function(object, functionName, parameterValue) {
     object[functionName](parameterValue);
}

This Util API's work for below code:

function Student() {

     var firstName;

     var city, country;

     this.getFirstName = function() {
          return firstName;
     }

     this.setFirstName = function(val) {
          firstName = val;
     }

     this.getAddress() {
          return city + country;
     }

     this.setAddress(val1, val2) {
          city = val1;
          country = val2;
     }

}


var student = FunctionUtils.createFunctionInstance("Student");
FunctionUtils.invokeAndinflate(student, "setFirstName", "Pranav"); //Works

FunctionUtils.invokeAndInflate(student, "setAddress", "LA", "USA"); //Doesn't Work.

How to use FunctionUtils.invokeAndInflate API for more than one parameters ? ?

Upvotes: 3

Views: 4050

Answers (2)

IUnknown
IUnknown

Reputation: 22478

You can rewrite the FunctionUtils.invokeAndInflate function as below:

FunctionUtils.invokeAndInflate = function(object, functionName, parameterValue) {
    object[functionName].apply(object, Array.prototype.slice.call(arguments, 2));
}

Upvotes: 4

Niccol&#242; Campolungo
Niccol&#242; Campolungo

Reputation: 12040

I suggest you reading about .call() and .apply(), here is an article about them. http://odetocode.com/blogs/scott/archive/2007/07/05/function-apply-and-function-call-in-javascript.aspx

Upvotes: 0

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