Question

我使用API获取字符串列表。例如：

'The Lord of the Rings: The Fellowship of the Ring 2001'
'The Lord of the Rings: The Two Towers 2002'
'The Lord of the Rings: The Return of the King 2003'

我想像这样转换它：

'Lord of the Rings: The Fellowship of the Ring 2001'
'Lord of the Rings: The Two Towers 2002'
'Lord of the Rings: The Return of the King 2003'

不知怎的，我是通过使用下面的脚本但有一些错误来做到的。参见test1和test2。

function myFunction(str) { 
    var position = str.search(/the/i);
    if (position == 0) { 
         var str = str.substring( str.indexOf(" ") + 1, str.length );
    }
    return str;
}

test1：

str = "The Lord of the Rings: The Fellowship of the Ring 2001"

结果：

return = "Lord of the Rings: The Fellowship of the Ring 2001" // that's what i want

test2：

str = "There Will Be Blood 2007"

结果：

returns = 'Will Be Blood' // that's what i don't want

我只想删除第一个字＆＃34;＆＃34;来自字符串。

Answer 1

您可以使用正则表达式来实现此目的。具体来说是/^The\s/i。请注意，^非常重要，因为它可确保匹配仅查找The的主要实例。

var arr = ['The Lord of the Rings: The Fellowship of the Ring 2001', 'The Lord of the Rings: The Two Towers 2002', 'The Lord of the Rings: The Return of the King 2003'];

var re = /^The\s/i;
for (var i = 0; i < arr.length; i++) {
    arr[i] = arr[i].replace(re, '');
}

console.log(arr);

Answer 2

只需添加一个空格：

＆＃13;

function myFunction(str) { 
  var position = str.search(/the\s/i);
  if(position == 0){ 
    var str = str.substring( str.indexOf(" ") + 1, str.length );
  }
  return str;
}

console.log(myFunction("The Ring of Lords: The ring of Lords"));
console.log(myFunction("There Ring of Lords: The ring of Lords"));

＆＃13;

Answer 3

您可以使用substr函数执行此操作：

for(var i = 0; i < list.length; ++i){
    if(list[i].substr(0, 4).toLowerCase() == "the ")
        list[i] = list[i].substr(4, list[i].length);
}

这是一个jsfiddle：https://jsfiddle.net/pk4fjwyf/

Answer 4

只需使用此

var string = "The Lord of the Rings: The Fellowship of the Ring 2001";
var result = string.replace(/^The\s/i, " ");
alert(result);

如何删除第一个单词＆＃34;＆＃34;从字符串使用JavaScript

4 个答案: