js截取字符串subString()方法
var basic = "abc,def,ghi,";
// 一.去掉最后的一位
basic = basic.substr(0, basic.length - 1);
console.log(basic);
basic = basic.substring(0, basic.lastIndexOf(,));
console.log(basic);
// 二.任意截取
var str = "0123456789";
console.log("从索引为3的字符起到索引为5的前一个字符结束：", str.substring(3,5)); //34 var basic = "abc,def,ghi,"; // 一.去掉最后的一位 basic = basic.substr(0, basic.length - 1); console.log(basic); basic = basic.substring(0, basic.lastIndexOf(,)); console.log(basic); // 二.任意截取 var str = "0123456789"; console.log("从索引为3的字符起到索引为5的前一个字符结束：", str.substring(3,5)); //34
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