When utilizing lodash's _.forIn function, you will have access to a callback that includes both the key and value of the current element.
_.forIn({...}, callback);
function callback(key, value) {...}
Is there a method available to pass an additional third parameter to this function?
An efficient way to streamline your code is by utilizing a Higher-Order Function (HOF) instead of creating repetitive callback functions.
function generateCallback(parameterInput){
return function(action, result){
if(parameterInput === 'OptionA'){
//perform Action A;
} else if(parameterInput === 'OptionB'){
//perform Action B
}
}
}
var customCallback1 = generateCallback('OptionA');
var customCallback2 = generateCallback('OptionB');
_.iterateOver({...}, customCallback1);
_.iterateOver({...}, customCallback2);
To achieve this, employ the partial() method.
function display() {
console.log(arguments);
}
var customFunc = _.partial(display, 'greetings');
customFunc('universe');
// → [ "greetings", "universe" ]
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