如何使用javascript從字符串中刪除第一個字「the」

Question

我使用API​​獲取字符串的列表。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' 

我想把它轉換成這樣：

'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，我做到了通過使用下面的腳本，但有一些錯誤。請參閱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" 

結果：

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

TEST2：

str = "There Will Be Blood 2007" 

結果：

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

我只想從字符串中刪除第一個單詞「The」。

Answer 1

您可以使用正則表達式來實現這一目標。具體爲/^The\s/i。請注意，^非常重要，因爲它確保匹配只發現The的前導實例。

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

只需添加一個空格：

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

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); 

Answer 4

您可以用SUBSTR功能做到這一點：

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); 
} 

這裏是一個的jsfiddle：https://jsfiddle.net/pk4fjwyf/