[英]Javascript outer scope variable access
OperationSelector = function(selectElement) {
this.selectElement = selectElement;
}
OperationSelector.prototype.populateSelectWithData = function(xmlData) {
$(xmlData).find('operation').each(function() {
var operation = $(this);
selectElement.append('<option>' + operation.attr("title") + '</option>');
});
}
How could I access OperationSelector.selectElement in iteration block ? 我怎么能在迭代块中访问OperationSelector.selectElement?
Assign it to a local variable in the function scope before your iteration function. 在迭代函数之前将其分配给函数作用域中的局部变量。 Then you can reference it within:
然后你可以在其中引用它:
OperationSelector = function(selectElement) {
this.selectElement = selectElement;
}
OperationSelector.prototype.populateSelectWithData = function(xmlData) {
var os = this;
$(xmlData).find('operation').each(function() {
var operation = $(this);
os.selectElement.append(new Option(operation.attr("title")));
});
}
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