ECMAScript 6 入门之字符串

2023-02-01 07:54:35

1、新增字符串的方法

1、字符是否存在

console.log("Yo".indexOf("Y")!=-1);

console.log("Yo".includes("Y"));

2、以哪个字符开头和结束

console.log("Yo".startsWith("Y"));

console.log("Yo".endsWith("o"));

3、重复多少次

console.log("Yo ".repeat(3));

2、模板字符串

    let title="野外基地";

var tpl="div"+"<span>"+title+"</span>"+"</div>";

let tplw=`

<div>

　　<span>${title}</span>

</div>

`

console.log("tpl:",tpl);

console.log("tplw:",tplw);

let title="野外基地";

let tplw=`

<div>

<span>${title+`<span>2016</span>`}</span>

</div>

`

console.log("tplw:",tplw);

let title="野外基地";

let tplw=`

<div>

<span>${title+`<span>${1234}2016</span>`}</span>

</div>

`

console.log("tplw:",tplw);