参考:https://blog.csdn.net/maqinqin/article/details/5323824
function getStrCount(scrstr,armstr) { //scrstr 源字符串 armstr 特殊字符
var count=0;
while(scrstr.indexOf(armstr) != -1 ) {
scrstr = scrstr.replace(armstr,"")
count++;
}
return count;
}
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