在回答this question的过程中，我非常希望能够将Range扩展特定数量的字符。在COM API中，我将使用Range.MoveEnd()。有没有我在JS API中找不到的等效项？
背景：所参考的问题是有关查找超过255个字符的搜索词-这是Word在桌面上的限制。搜索失败。
解决这个问题的简单方法是搜索前254个字符，然后用剩余的字符数扩展找到的范围，并将该Range.Text与完整的搜索词进行比较。
找不到以这种方式扩展范围的等效项，我不得不诉诸：
因此，我的问题...
async function basicSearch() {
await Word.run(async (context) => {
let maxNrChars = 254;
let searchterm = "";
let shortSearch = true; //search string < 255 chars
let fullSearchterm = "Video provides a powerful way to help you prove your point. When you click Online Video, you can paste in the embed code for the video you want to add. You can also type a keyword to search online for the video that best fits your document. Aösdlkvaösd faoweifu aösdlkcj aösdofi "
let searchTermNrChars = fullSearchterm.length;
let nrSearchCycles = Number((searchTermNrChars / maxNrChars).toFixed(0));
let nrRemainingChars = searchTermNrChars - (nrSearchCycles * maxNrChars);
//console.log("Number of characters in search term: " + searchTermNrChars
// + "\nnumber of search cycles required: " + nrSearchCycles
// + "\nremaining number of characters: " + nrRemainingChars);
//numerous ranges are required to extend original found range
let bodyRange = context.document.body.getRange();
bodyRange.load('End');
let completeRange = null;
let resultRange = null;
let extendedRange = null;
let followupRange = null;
let cycleCounter = 0;
let resultText = "";
if (searchTermNrChars > maxNrChars) {
searchterm = fullSearchterm.substring(0, maxNrChars);
cycleCounter++;
shortSearch = false;
}
else { searchterm = fullSearchterm; }
let results = context.document.body.search(searchterm);
results.load({ select: 'font/highlightColor, text' });
await context.sync();
// short search term, highlight...
if (shortSearch) {
for (let i = 0; i < results.items.length; i++) {
results.items[i].font.highlightColor = "yellow";
}
}
else {
//console.log("Long search");
for (let i = 0; i < results.items.length; i++) {
resultRange = results.items[i];
resultRange.load('End');
extendedRange = resultRange.getRange('End').expandTo(bodyRange.getRange('End'));
await context.sync();
//search for the remainder of the long search term
for (let cycle = 1; cycle < nrSearchCycles; cycle++) {
searchterm = fullSearchterm.substring((cycle * maxNrChars), maxNrChars);
//console.log(searchterm + " in cycle " + cycle);
let CycleResults = extendedRange.search(searchterm);
CycleResults.load({ select: 'text, Start, End' });
await context.sync();
followupRange = CycleResults.items[0];
//directly adjacent?
let isAfter = followupRange.compareLocationWith(resultRange);
if (isAfter.value == Word.LocationRelation.adjacentAfter) {
resultRange.expandTo(followupRange);
extendedRange = resultRange.getRange('End').expandTo(bodyRange.getRange('End'));
}
await context.sync();
}
if (nrRemainingChars > 0) {
console.log("In remaining chars");
searchterm = fullSearchterm.substring(searchTermNrChars - nrRemainingChars);
console.log(searchterm);
let xresults = extendedRange.search(searchterm);
xresults.load('end, text');
await context.sync();
let xresult = xresults.items[0];
let isAfter = xresult.compareLocationWith(resultRange);
await context.sync();
console.log(isAfter.value);
if (isAfter.value == Word.LocationRelation.adjacentAfter) {
completeRange = resultRange.expandTo(xresult);
completeRange.load('text');
//completeRange.select();
await context.sync();
resultText = completeRange.text.substring(0, fullSearchterm.length);
console.log("Result" + cycleCounter + ": " + resultText);
}
}
else {
//No remeaining chars
resultRange.load('text');
//resultRange.select();
await context.sync();
resultText = resultRange.text.substring(0, fullSearchterm.length);
completeRange = resultRange;
}
//long search successful?
if (resultText == fullSearchterm) {
completeRange.font.highlightColor = "yellow";
}
else {
console.log("Else! " + resultText + " / " + fullSearchterm);
}
completeRange = null;
}
}
});
答案 0 :(得分：1)
这是我们在原始设计中所拥有的，但是实际上已从API中删除了它，因为它很容易导致意外的结果（即隐藏的字符不一致，脚注等），而我们无法用现有资源。我们决定将其删除。
话虽这么说，我认为您可以使用Word.js实现与range.MoveEnd（）类似的功能，您只需要定义;）的结尾即可。一种方法是使用range.expandTo（endRange）方法。再次，有趣的是如何获取“ endRange”，因此下面的示例显示了如果“ end”表示段落的结尾（可能在您的情况下就足够了）的话，该如何做。
async function run() {
await Word.run(async (context) => {
//assume the range at the end of your 255 characters.
var startRange = context.document.getSelection().getRange("end");
//This one is the range at the end of the paragraph including the selection.
var endRange = context.document.getSelection().paragraphs.getLast().getRange("end");
var deltaRange = startRange.expandTo(endRange);
context.load(deltaRange);
await context.sync();
// this will print the characters after the range all the way to the end of the paragraph.
console.log(deltaRange.text);
});
}
希望这有助于或至少使您朝正确的方向迈进。