In my JavaScript class, I have a method called resetRule():
resetRule() {
let sheetRules = Array.from(this.sheet.rules);
sheetRules.forEach(function(node, i) {
if(node.name != undefined) {
newRule.sheet.deleteRule(i);
}
});
}
When you create an instance of a class, you need to assign it to a variable like this:
const newRule = new NewRule(*params*);
The methods and properties of the class can refer to the object using this. For example:
this.method();
this.property;
My question is: How can we reference the variable that instantiated the class within a function called by one of its methods?
In other words, when a function inside a class method changes the scope and alters the definition of this, how can we access the original variable that created the instance of the class when outside the scope of the class methods?
While working on this question, I discovered a way to set the this value for a .forEach loop like so:
resetRule() {
let sheetRules = Array.from(this.sheet.rules);
sheetRules.forEach(function(node, i) {
if(node.name != undefined) {
this.sheet.deleteRule(i);
}
}, this);
}
However, I'm aware that this solution relies on the capabilities of the .forEach method. I still seek a general approach to handle such situations.