Truncate String 字符串删节(截取)
截断字符串到指定的长度
const truncateString = (str, num) => str.length > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;
举个例子:
var str = "Apache Ant is a Java based build tool from Apache Software Foundation.";
truncateString(str, 30);输出:
"Apache Ant is a Java based ..."
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