如何使用JavaScript从字符串中删除第一个单词“ the”

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'

我想这样转换：

'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'

我以某种方式通过使用以下脚本来做到这一点，但存在一些错误。 请参阅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;
}

测试1：

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

测试2：

str = "There Will Be Blood 2007"

结果：

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

我只想从字符串中删除第一个单词“ The”。

Answer 1

您可以使用正则表达式来实现此目的。 特别是/^The\\s/i 。 请注意， ^很重要，因为它可以确保匹配仅找到The前导实例。

 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：

 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")); 

Answer 3

您可以使用substr函数：

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);