var list = document.getElementById("test-list");
var webtech = ["JavaScript", "HTML", "CSS"];
for (let i of list.children){
if ( webtech.indexOf(i.innerText) === -1 ){ list.removeChild(i) }
}
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~曉瘋~
var list = document.getElementById("test-list");
var webtech = ["JavaScript", "HTML", "CSS"];
for (let i of list.children){
if ( webtech.indexOf(i.innerText) === -1 ){ list.removeChild(i) }
}