文本过长时中间部分用省略号表示。

转自:
https://blog.csdn.net/baidu_38027860/article/details/81035157

//截取字符串中间用省略号显示
function getSubStr (str){
var subStr1 = str.substr(0,10);
var subStr2 = str.substr(str.length-5,5);
var subStr = subStr1 + "..." + subStr2 ;
return subStr;
}

var str = "12312312asdasdxzczxaweqwdsadasdczxcasd";

getSubStr(str);    

//直接调用即可

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转载自blog.csdn.net/weixin_42645716/article/details/87868538