Twitter喜欢jQuery中的文本

Question

I am trying to walk through a table and get a specific TD with a name of note and cut it off at 40 characters and display "..." if the text is over 40 characters.

I wrote:

var element = $('.maintenanceTable').find('td[name="note"]');
console.log(element.text().length);
if(element.text().length > 40){
    element.text().substring(0, 10) + '....';
}
console.log(element)

The first console.log shows 115 characters, the second, shows a object returned .... What am I doing wrong?

Answer 1

jQuery functions like "text" generally have two forms. If you supply no arguments to them (eg text() ), they give you the value contained in the element. But if you pass an argument (eg text("something") ), then it sets the value.

So you want something like this:

var element = $('.maintenanceTable').find('td[name="note"]').first();
if(element.text().length > 40) {
  element.text(
    element.text().substring(0, 39) + '...'
  );
}