森林海
我的另一个答案只适用于Firefox。这个答案适用于Chrome。(我不知道火狐也能用。)function getWordAtPoint(elem, x, y) {
if(elem.nodeType == elem.TEXT_NODE) {
var range = elem.ownerDocument.createRange();
range.selectNodeContents(elem);
var currentPos = 0;
var endPos = range.endOffset;
while(currentPos+1 < endPos) {
range.setStart(elem, currentPos);
range.setEnd(elem, currentPos+1);
if(range.getBoundingClientRect().left <= x && range.getBoundingClientRect().right >= x &&
range.getBoundingClientRect().top <= y && range.getBoundingClientRect().bottom >= y) {
range.expand("word");
var ret = range.toString();
range.detach();
return(ret);
}
currentPos += 1;
}
} else {
for(var i = 0; i < elem.childNodes.length; i++) {
var range = elem.childNodes[i].ownerDocument.createRange();
range.selectNodeContents(elem.childNodes[i]);
if(range.getBoundingClientRect().left <= x && range.getBoundingClientRect().right >= x &&
range.getBoundingClientRect().top <= y && range.getBoundingClientRect().bottom >= y) {
range.detach();
return(getWordAtPoint(elem.childNodes[i], x, y));
} else {
range.detach();
}
}
}
return(null);}在你的Mousemove处理程序中,打电话getWordAtPoint(e.target, e.x, e.y);