<!DOCTYPE html>
<body>
<div id="app">
<P>原始字符串：{
{
message }}</p>
<p>计算后的反转字符串：</p>
</div>
<script src="https://unpkg.com/vue@next"></script>
<script>
const app = Vue.createApp({
data() {
return {
message: 'Hello, Java无难事！'
}
},
computed: {
reserved(message) {
}
}
})
//console.log(s)
app.mount('#app')
</script>
</body>
</html>
应该是要把字母批一下，再反转，再组合起来，但是也记不清到底是怎么用的了。
<!DOCTYPE html>
<body>
<div id="app">
<P>原始字符串：{
{
message }}</p>
<p>计算后的反转字符串：</p>
</div>
<script src="https://unpkg.com/vue@next"></script>
<script>
const app = Vue.createApp({
data() {
return {
message: 'Hello, Java无难事！'
}
},
computed: {
split()
reserved()
join()
}
}
})
//console.log(s)
app.mount('#app')
</script>
</body>
</html>
原来是这样
<!DOCTYPE html>
<body>
<div id="app">
<P>原始字符串：{
{
message }}</p>
<p>计算后的反转字符串：</p>
</div>
<script src="https://unpkg.com/vue@next"></script>
<script>
const app = Vue.createApp({
data() {
return {
message: 'Hello, Java无难事！'
}
},
computed: {
reversedMessage() {
return this.message.split('').reverse().join('');
}
}
})
//console.log(s)
app.mount('#app')
</script>
</body>
</html>
计算属性里也新建一个函数，返回一个值
用this代替message
<!DOCTYPE html>
<body>
<div id="app">
<P>原始字符串：{
{
message }}</p>
<p>计算后的反转字符串：{
{
reversedMessage }}</p>
</div>
<script src="https://unpkg.com/vue@next"></script>
<script>
const app = Vue.createApp({
data() {
return {
message: 'Hello, Java无难事！'
}
},
computed: {
reversedMessage() {
return this.message.split('').reverse().join('');
}
}
})
//console.log(s)
app.mount('#app')
</script>
</body>
</html>
再在后面跟split(’’).reverse().join(’’)
不停地点号