JS中如何删除某个指定字符(前)后的字符串 JS如何去除指定字符串
\u5982\u4f55\u5728c++\u7684\u5b57\u7b26\u4e32\u4e2d\u5220\u9664\u67d0\u4e2a\u5b57\u7b26\u4e32\u5229\u7528C\u7684strstr\u51fd\u6570\u67e5\u627e\u5b57\u7b26\u4e32\uff0c\u7136\u540estrcpy\u62f7\u8d1d\u8986\u76d6\u5b83\u3002
#include
int main() {
char s1[] = "This string is used for testing strstr() function";
char s2[] = "used for";
char *s3;
s3 = strstr(s1, s2);
int p1 = s3-s1;
strcpy(s1+p1, s3+strlen(s2));
cout << s1 << endl;
return 0;
}
//\u8fd9\u91cc\u53ea\u5220\u9664\u4e86\u4e00\u5904\u5339\u914d\u7684\u5b57\u7b26\u4e32\uff0c\u5982\u679c\u6709\u591a\u5904\u5339\u914d\uff0c\u5219\u5faa\u73af\u5904\u7406\u3002
\u53ef\u4ee5\u7528replace\u51fd\u6570\u53bb\u9664\u6307\u5b9a\u5b57\u7b26\u4e32\u3002
1\u3001\u5728body\u6807\u7b7e\u548chtml\u6807\u7b7e\u4e2d\u6dfb\u52a0\u4e00\u4e2ascript\u6807\u7b7e\uff0c\u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd9\u91cc\u4ee5\u201c\u8fd9\u662f\u4e2a\u4ec0\u4e48\u6f14\u793a\u6587\u672c\u201d\u4e3a\u4f8b\uff0c\u5c06\u6b64\u65f6\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u5230\u9875\u9762\uff1a
2\u3001\u8f93\u5165\u201cstr.replace('\u4ec0\u4e48', ''); \u201d\uff0cstr\u662f\u4e4b\u524d\u5b9a\u4e49\u7684\u5b57\u7b26\u4e32\u53d8\u91cf\u540d\uff0creplace\u662f\u66ff\u6362\u5b57\u7b26\u4e32\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u6709\u4e24\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u60f3\u8981\u88ab\u66ff\u6362\u7684\u5185\u5bb9\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u60f3\u8981\u88ab\u66ff\u6362\u6210\u65b0\u7684\u5185\u5bb9\uff0c\u5982\u679c\u7b2c\u4e8c\u4e2a\u4e3a\u7a7a\u7684\u5b57\u7b26\u4e32\uff0c\u76f8\u5f53\u4e8e\u53bb\u9664\u60f3\u8981\u88ab\u66ff\u6362\u7684\u5185\u5bb9\uff1a
3\u3001replace\u51fd\u6570\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\uff0c\u8fd9\u65f6\u9700\u8981\u91cd\u65b0\u5c06\u8fd9\u4e2a\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u539f\u6765\u7684\u5b57\u7b26\u4e32\uff0c\u518d\u5c06\u8fd9\u4e2a\u5b57\u7b26\u4e32\u8f93\u51fa\uff0c\u8fd9\u65f6\u539f\u6587\u672c\u4e2d\u7684\u201c\u4ec0\u4e48\u201d\u5c31\u88ab\u53bb\u9664\u4e86\uff1a
var ipos;
str="123456789+abc";
ipos = str.indexOf("+");
str1=str.substring(0,ipos); //取前部分
str2=str.substring(ipos,str.length);//取后部分
var s = "123456789+abc";
alert(s.substring(0, s.indexOf('+')));
alert(s.substring(s.indexOf('+') + 1, s.length));
绛旓細str="123456789+abc";ipos = str.indexOf("+");str1=str.substring(0,ipos); //鍙栧墠閮ㄥ垎 str2=str.substring(ipos,str.length);//鍙栧悗閮ㄥ垎
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