[英]Remove part of string between two indexOf in javascript
我如何从两个indexOf
之间的字符串中删除
我有这个jsFiddle
这是我的代码:
var x = "M 178.6491699876038 23.419570090792845 C 183.6491699876038
23.419570090792845 186.47776067057902 30.902823043098138 190.3670728596699
41.19229585251793 L 194.25638504876076 51.48176866193772" ;
var c = x.indexOf('C') ;
var L = x.indexOf('L') ;
var final = x.slice (c,L) ;
console.log(final) ;
此代码将导致返回字符串的已删除部分
问题删除C
和L
之间的部分后如何返回原始字符串
var c = x.indexOf('C') ;
var L = x.indexOf('L') ;
var remaining = x.slice(0, c) + x.slice(L);
小提琴:
只需将原始字符串的该部分替换为空:
var x = "M 178.6491699876038 23.419570090792845 C 183.6491699876038 23.419570090792845 186.47776067057902 30.902823043098138 190.3670728596699 41.19229585251793 L 194.25638504876076 51.48176866193772" ;
var c = x.indexOf('C') ;
var L = x.indexOf('L') ;
var final = x.slice (c,L) ;
console.log(x.replace(final, ''));
您可以为此使用2 substring
。
var c = x.indexOf('C') ;
var L = x.indexOf('L') ;
var y = x.substring(0, c) + x.substring(L);
尝试:
var x = "M 178.6491699876038 23.419570090792845 C 183.6491699876038 23.419570090792845 186.47776067057902 30.902823043098138 190.3670728596699 41.19229585251793 L 194.25638504876076 51.48176866193772";
var c = x.indexOf('C');
var L = x.indexOf('L');
var final = x.substring(0, c) + x.substring(L, x.length);
console.log(final);
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