javascript 如果字符串中的子字符串，则从字符串的末尾将其删除
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If substring in string, remove it through the end from string
提问by dmr
I'm trying to figure out how to do the following with javascript:
If a substring is in the string, remove from the beginning of the substring till the end of the string from the string.
我试图弄清楚如何使用 javascript 执行以下操作：
如果字符串中有子字符串，则从子字符串的开头到字符串的末尾删除。
For example (pseudocode):
例如（伪代码）：
var mySub = 'Foo'
var myString = 'testingFooMiscText'
var myString2 = 'testingMisctext'
var myStringEdit = //myString - (Foo till end myString)
var myString2Edit = myString2 //(cause no Foo in it)
回答by hungryMind
var index = str.indexOf(str1);
if(index != -1)
str = str.substr(index)
回答by FishBasketGordo
If I understand what you're asking, you'll want to do this:
如果我明白你在问什么，你会想要这样做：
function replaceIfSubstring(original, substr) {
var idx = original.indexOf(substr);
if (idx != -1) {
return original.substr(idx);
} else {
return original;
}
}
回答by yoozer8
If you want "testingFooMiscText" to end up as "testing", use
如果您希望“testingFooMiscText”最终成为“testing”，请使用
word = word.substring(0, word.indexOf("Foo"));
If you want "testingFooMiscText" to end up as "FooMiscText", use
如果您希望“testingFooMiscText”最终成为“FooMiscText”，请使用
word = word.substring(word.indexOf("Foo"));
You may need a +/- 1 after the indexOf() to adjust the start/end of the string
您可能需要在 indexOf() 之后使用 +/- 1 来调整字符串的开始/结束
回答by Charmander
myString.substring(0, myString.indexOf(mySub))
回答by Jeff
This should do the trick.
这应该可以解决问题。
var myString = 'testingFooMiscText'
myString.substring(myString.indexOf('Foo')) //FooMiscText
myString.substring(myString.indexOf('Bar')) //testingFooMiscText
回答by Paul
var newString = mystring.substring(mystring.indexOf(mySub));
回答by Arun Sule
I used following code to eliminate fakefile from file Name and it worked.
我使用以下代码从文件名中消除了 fakefile 并且它起作用了。
function confsel()
{
val = document.frm1.fileA.value;
value of val comes like C:\fakepath\fileName
var n = val.includes("fakepath");
if(n)
{
val=val.substring(12);
}
}
