如何使用underscore.js编辑具有字符串键值对的对象数组中的字符串？

Question

如果可能的话，我更喜欢使用下划线解决方案，但是如果这是我能得到的最好的解决方案，我将采用香草JS解决方案。

我想使用数组2编辑以array2中的字符串开头或结尾的array1对象中的字符串。 我要寻找的结果可以在下面的array3的结果中看到：

array1 = [{key1: "Patty Bakery", key2: stuff}, {key1: "Bob Wine Shack",
key2: mattersNot}, {key1: "Romeo Clothing", key2: things}, {key1:
"StackIt", key2: finished}];

array2 = ["Patty", "Romeo", "Wine Shack"];

array3 = [{key1: "Bakery", key2: stuff}, {key1: "Bob",
key2: mattersNot}, {key1: "Clothing", key2: things}, {key1:
"StackIt", key2: finished}];

到目前为止，我能做的最好的事情就是使用以下代码删除array1中的整个对象：

array1.filter(function(a){
return!_.some(array2, function(b){
return startsWith(a.key1, b)})})
//I have installed and am using underscore.string

这给了我一个看起来像的array3

array3 = [{key1:"StackIt", key2: finished}];

Answer 1

您可以将Regex用于以开头或结尾的模式。

以下是描述相同内容的代码段

 var array1 = [{ key1: "Patty Bakery", key2: "stuff" }, { key1: "Bob Wine Shack", key2: "mattersNot" }, { key1: "Romeo Clothing", key2: "things" }, { key1: "StackIt", key2: "finished" }]; var array2 = ["Patty", "Romeo", "Wine Shack"]; var array3 = []; array2.forEach(function(item) { var startWithReg = new RegExp("^" + item); var endsWithReg = new RegExp(item + "$"); console.log(startWithReg) array3 = array1.map(function(row) { row.key1 = row.key1.replace(startWithReg, '').trim(); row.key1 = row.key1.replace(endsWithReg, '').trim(); return row; }); }) console.log(array3)