Suppose below I wanted to change 'valid' for 'a','b' and 'c' equal to true. For the object foo.
var foo = {
a: {
valid: false,
required: true
},
b: {
valid: false,
required: true
},
c: {
valid: false,
required: true
}
};
for (var key in foo) {
var obj = foo[key];
for (var prop in obj) {
if (obj.hasOwnProperty(prop)) {
//how can I assign valid to true here?
};
}
You're making this more complicated than it needs to be.
Just do this:
for( var key in foo ) {
foo[key].valid = true;
}
Or, if you're concerned that some code in your page may have extended Object.prototype with an enumerable property, you can do this instead:
for( var key in foo ) {
if( foo.hasOwnProperty(key) ) {
foo[key].valid = true;
}
}
But nobody should ever extend Object.prototype with an enumerable property. That breaks all kinds of code. It's very unlikely that this would be an issue you'd need to worry about.
Like this: FIDDLE
for (var key in foo) {
var obj = foo[key];
for (var prop in obj) {
if (obj.hasOwnProperty("valid")) { //checks if "valid" exists
if (!obj.valid) { //if valid=false change to true, else ignore
obj.valid = true;
};
}
}
}
console.log(foo);
prop
obj[prop].valid = true? You already know how to access object properties in a loop and how to perform an assignment, so I don't get what the issue is.key, notprop, in the outer loop.