带字符的JavaScript修饰

Question

I have a string like this:

var str=",test,test1,test2,teset4"

How can I remove the ',' in front of the string? So the output will be something like this:

'test,test1,test2,teset4'

Answer 1

you can try this:

str.substr(1)

 var str=",test,test1,test2,teset4" alert(str.substr(1)) 

Answer 2

Use any of these String#slice , String#substr or String#substring .

 var str = ",test,test1,test2,teset4" console.log(str.slice(1)); console.log(str.substr(1)); console.log(str.substring(1)); 

Answer 3

You can use substr :

 var str = ",test,test1,test2,teset4" console.log(str.substr(1)); 

Answer 4

 var str=",test,test1,test2,teset4"; while(str.charAt(0) === ',') str = str.substr(1); alert(str); 

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