删除字符串中某个位置的字符 - javascript
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Remove a character at a certain position in a string - javascript
提问by starbeamrainbowlabs
Is there an easy way to remove the character at a certain position in javascript?
有没有一种简单的方法可以删除javascript中某个位置的字符？
e.g. if I have the string "Hello World", can I remove the character at position 3?
例如，如果我有字符串"Hello World"，我可以删除位置 3 处的字符吗？
the result I would be looking for would the following:
我要寻找的结果如下：
"Helo World"
This question isn't a duplicate of Javascript - remove character from a string, beucase this one is about removing the character at a specific position, and thta question is about removing all instances of a character.
这个问题不是Javascript的副本- 从字符串中删除字符，因为这个问题是关于删除特定位置的字符，而这个问题是关于删除一个字符的所有实例。
回答by Matt
回答by Ishan Dhingra
You can try it this way!!
你可以试试这个方法！！
var str ="Hello World";
var position = 6;//its 1 based
var newStr = str.substring(0,position - 1) + str.substring(postion, str.length);
alert(newStr);
Here is the live example: http://jsbin.com/ogagaq
这是现场示例：http: //jsbin.com/ogagaq
回答by Alexandre Daubricourt
Turn the string into array, cut a character at specified index and turn back to string
将字符串转成数组，在指定索引处剪切一个字符并转回字符串
let str = 'Hello World'.split('')
str.splice(3, 1)
str = str.join('')
// str = 'Helo World'.
回答by SURENDRANATH SONAWANE
If you omit the particular index character then use this method
如果省略特定的索引字符，则使用此方法
function removeByIndex(str,index) {
if (index==0) {
return str.slice(1)
} else {
return str.slice(0,index-1) + str.slice(index);
}
}
var str = "Hello world", index=3;
console.log(removeByIndex(str,index));
// Output: "Helo world"
回答by Nikhil D
var str = 'Hello World';
str = setCharAt(str, 3, '');
alert(str);
function setCharAt(str, index, chr)
{
if (index > str.length - 1) return str;
return str.substr(0, index) + chr + str.substr(index + 1);
}
回答by Nikhil D
you can use substring()method. ex,
你可以使用substring()方法。前任，
var x = "Hello world"
var x = x.substring(0, i) + 'h' + x.substring(i+1);
回答by RamThakur
Hi starbeamrainbowlabs ,
嗨，starbeamrainbowlabs，
You can do this with the following:
您可以使用以下方法执行此操作：
var oldValue = "pic quality, hello" ;
var newValue = "hello";
var oldValueLength = oldValue.length ;
var newValueLength = newValue.length ;
var from = oldValue.search(newValue) ;
var to = from + newValueLength ;
var nes = oldValue.substr(0,from) + oldValue.substr(to,oldValueLength);
console.log(nes);
I tested this in my javascript console so you can also check this out Thanks
我在我的 javascript 控制台中对此进行了测试，因此您也可以查看此内容，谢谢
回答by artis
var str = 'Hello World',
i = 3,
result = str.substr(0, i-1)+str.substring(i);
alert(result);
Value of ishould not be less then 1.
的值i不应该小于1。
