I have a module created in JavaScript.
var test = function () {
var validate = function () {
alert("fg");
};
return {
validate: validate
};
}();
Now, can I access the above module using a string? For example:
$(function () {
var s = "test";
s.validate(); // error
});
Well, I tried, but no luck so far, because "s" is string. Is there any way to convert this string into above module object and access the validate method?
You can make use of eval().
var test = function () {
var validate = function () {
alert("fg");
};
return {
validate: validate
};
}();
$(function () {
var s = eval("test"); //Here
s.validate();
});
For a side note:
Use eval() carefully. From the docs:
eval() is a dangerous function, which executes the code it's passed with the privileges of the caller. If you run eval() with a string that could be affected by a malicious party, you may end up running malicious code on the user's machine with the permissions of your webpage / extension.
eval at almost all costs. It is slow and dangerous, and usually indicates a poor design in your code. Instead of incorporating eval, OP should rethink program design.s is a String, so if you want to call validate on s you would have to extend the String prototype
String.prototype.validate = function () {
return alert("fg")
};
Or
But if you want to create an Object called "Test"
var test = function () {
var validate = function () {
alert("fg");
};
return {
validate: validate
};
}();
$(function () {
var s = test(); // Here
s.validate();
});
Another way to do this is to declare the function as global.
window.test = function () {
var validate = function () {
alert("fg");
};
return {
validate: validate
};
}();
$(function () {
var s = "test";
window[s].validate();
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
testfunction as global. Is it a global function or namespaced?