How can I prevent data binding for a specific variable? Here's my current approach:
// In my case, data is mostly an object.
// I would prefer a global solution
function(data) {
d = data; // This variable changes based on user input
oldD = data; // This variable should not change with user input
}
However, every time I use this code, the oldD variable ends up changing when the d variable changes. I want to avoid this scenario. How can I achieve this?
To assign a value without referencing the old object, use the following solution in JavaScript/Angular:
let newD = Object.assign({}, data);
I hope this solution is helpful.
Perhaps you are seeking information on how to duplicate an object.
function(data) {
d = data; // the variable that is modified based on user input
// create a completely new object with the same data
let oldD = Object.create(data.constructor.prototype);
data.constructor.apply(oldD);
}
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