本文介绍了Javascript外部范围变量访问的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

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>');
    });
}

如何在迭代块中访问OperationSelector.selectElement?

How could I access OperationSelector.selectElement in iteration block ?

推荐答案

在迭代函数之前将其分配给函数作用域中的局部变量。然后你可以在其中引用它:

Assign it to a local variable in the function scope before your iteration function. Then you can reference it within:

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")));
    });
}

这篇关于Javascript外部范围变量访问的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-11 00:06