I am having problems accessing nodes[i] from the callback function inside chrome.bookmarks.create. Any idea guys ? I am thinking this is because of closure. Any way to make it work ?
我在从chrome.bookmark .create内部的回调函数访问节点[I]时遇到了问题。知道男人吗?我想这是因为结束。有什么办法吗?
function copyBookmarks(nodes,folderId){
for(i=0;i<nodes.length;i++){
var properties={
parentId:folderId,
index:nodes[i].index,
title:nodes[i].title,
url:nodes[i].url
};
chrome.bookmarks.create(properties,function(newNode){
console.log(nodes[i]);//this doesnt work
});
}
}
1 个解决方案
#1
3
It is accessing nodes just fine, but the problem is that i will be the value after the loop completes. The usual solution is to make a copy of i in each iteration through a self-executing function:
它可以很好地访问节点，但问题是循环完成后，i将是值。通常的解决方案是通过自执行函数在每次迭代中复制i:
for (var i = 0; i < nodes.length; i++) {
// Other code...
// Self executing function to copy i as a local argument
(function (i) {
chrome.bookmarks.create(properties, function (newNode) {
console.log(nodes[i]);
});
})(i);
}
#1
3
It is accessing nodes just fine, but the problem is that i will be the value after the loop completes. The usual solution is to make a copy of i in each iteration through a self-executing function:
它可以很好地访问节点，但问题是循环完成后，i将是值。通常的解决方案是通过自执行函数在每次迭代中复制i:
for (var i = 0; i < nodes.length; i++) {
// Other code...
// Self executing function to copy i as a local argument
(function (i) {
chrome.bookmarks.create(properties, function (newNode) {
console.log(nodes[i]);
});
})(i);
}