homepage/toys/grepdict/grepdict.js

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// jshint asi:true
var words
function addWords(wl) {
words = wl.split("\n")
let re = document.querySelector("#regexp")
re.value = ""
re.disabled = false
re.focus()
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re.dispatchEvent(new Event("input"))
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}
function regexInput(e) {
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let re = new RegExp(e.target.value, "u")
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let matches = document.querySelector("#matches")
while (matches.firstChild) {
matches.firstChild.remove()
}
let nmatches = 0
for (let word of words) {
if (word.match(re)) {
let li = matches.appendChild(document.createElement("li"))
li.textContent = word
nmatches += 1
if (nmatches > 50) {
li.textContent = "…"
break
}
}
}
}
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function anchorToggle(e) {
let re = document.querySelector("#regexp")
let val = re.value.replace(/^\^|\$$/g, "")
if (val == re.value) {
val = "^" + val + "$"
}
re.value = val
re.focus()
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re.dispatchEvent(new Event("input"))
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}
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function init(e) {
fetch("words.txt")
.then(r => r.text())
.then(addWords)
document.querySelector("#regexp").addEventListener("input", regexInput)
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document.querySelector("#anchor").addEventListener("click", anchorToggle)
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}
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window.addEventListener("load", init)