Js文本溢出自動添加省略符號ellipsis

標籤：

原文：ellipsis: function(value, len, word) {        //判斷value有沒有超過指定長度        if (value && value.length > len) {            //word的作用就是盡量不讓一個完整的單詞被部分省略            if (word) {                var vs = value.substr(0, len - 2),                //猜測單詞的界限符                index = Math.max(vs.lastIndexOf(‘ ‘), vs.lastIndexOf(‘.‘), vs.lastIndexOf(‘!‘), vs.lastIndexOf(‘?‘));//保留一個容忍長度len - 15,過短的話，影響表現效果                if (index !== -1 && index >= (len - 15)) {                    return vs.substr(0, index) + "...";                }            }            return value.substr(0, len - 3) + "...";        }        return value;    } 經修改：

 function ellipsis(val, len, word) {            if (val && val.length > len) {                if (word) {                    var vs = val.substr(0, len - 1)                    var i = Math.max(vs.lastIndexOf(‘ ‘), vs.lastIndexOf(‘.‘), vs.lastIndexOf(‘!‘), vs.lastIndexOf(‘?‘))                    if ( i !== -1 && i >= (len-15) ) {                        return vs.substr(0, i) + ‘...‘                    }                }                return val.substr(0, len) + ‘...‘            }            return val        }

調用方式：

var aa="你是誰？薩達哈撒"; var bb=ellipsis(aa,5); console.log(bb);

 

Js文本溢出自動添加省略符號ellipsis