js判断文本是否溢出容器

onShowNameTipsMouseenter: function(e) {
var target = e.target;
var containerLength = $(target).width();
var textLength = target.scrollWidth;
var text = $(target).html();
//console.log("contentLength:" + containerLength);
//console.log("textLength", textLength);
if (textLength > containerLength) {
$(target).attr( "title", text);
} else {
$(target).removeAttr( "title");
}
}

var containerLength = $(target).width(); 当前容器的宽度
var textLength = target.scrollWidth; 当前文字(包括省略部分)的宽度

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