CSS 来选择/样式第一个单词

You have to wrap the word in a span to accomplish this.

What you are looking for is a pseudo-element that doesn't exist. There is :first-letter and :first-line, but no :first-word.

You can of course do this with JavaScript. Here's some code I found that does this: http://www.dynamicsitesolutions.com/javascript/first-word-selector/

Use the strong element, that is it's purpose:

<div id="content">
<p><strong>First Word</strong> rest of paragraph.</p>
</div>

Then create a style for it in your style sheet.

#content p strong
{
font-size: 14pt;
}

There isn't a plain CSS method for this. You might have to go with JavaScript + Regex to pop in a span.

Ideally, there would be a pseudo-element for first-word, but you're out of luck as that doesn't appear to work. We do have :first-letter and :first-line.

You might be able to use a combination of :after or :before to get at it without using a span.

I have to disagree with Dale... The strong element is actually the wrong element to use, implying something about the meaning, use, or emphasis of the content while you are simply intending to provide style to the element.

Ideally you would be able to accomplish this with a pseudo-class and your stylesheet, but as that is not possible you should make your markup semantically correct and use <span class="first-word">.

Same thing, with jQuery:

$('#links a').each(function(){
var me = $(this);
me.html( me.text().replace(/(^\w+)/,'<strong>$1</strong>') );
});

or

$('#links a').each(function(){
var me = $(this)
, t = me.text().split(' ');
me.html( '<strong>'+t.shift()+'</strong> '+t.join(' ') );
});

(Via 'Wizzud' on the jQuery Mailing List)

Pure CSS solution:

Use the :first-line pseudo-class.

display:block;
Width:40-100px; /* just enough for one word, depends on font size */
Overflow:visible; /* so longer words don't get clipped.*/
float:left; /* so it will flow with the paragraph. */
position:relative; /* for typeset adjustments. */

Didn't test that. Pretty sure it will work fine for you tho. I've applied block rules to pseudo-classes before. You might be stuck with a fixed width for every first word, so text-align:center; and give it a nice background or something to deal with the negative space.

Hope that works for you. :)

-Motekye

Here's a bit of JavaScript and jQuery I threw together to wrap the first word of each paragraph with a <span> tag.

$(function() {
$('#content p').each(function() {
var text = this.innerHTML;
var firstSpaceIndex = text.indexOf(" ");
if (firstSpaceIndex > 0) {
var substrBefore = text.substring(0,firstSpaceIndex);
var substrAfter = text.substring(firstSpaceIndex, text.length)
var newText = '<span class="firstWord">' + substrBefore + '</span>' + substrAfter;
this.innerHTML = newText;
} else {
this.innerHTML = '<span class="firstWord">' + text + '</span>';
}
});
});

You can then use CSS to create a style for .firstWord.

It's not perfect, as it doesn't account for every type of whitespace; however, I'm sure it could accomplish what you're after with a few tweaks.

Keep in mind that this code will only execute after page load, so it may take a split second to see the effect.

Sadly even with the likes of CSS 3 we still do not have the likes of :first-word :last-word etc using pure CSS. Thankfully there's almost a JavaScript nowadays for everything which brings me to my recommendation. Using nthEverything and jQuery you can expand from the traditional Pseudo elements.

Currently the valid Pseudos are:

• :first-child
• :first-of-type
• :only-child
• :last-child
• :last-of-type
• :only-of-type
• :nth-child
• :nth-of-type
• :nth-last-child
• :nth-last-of-type

And using nth Everything we can expand this to:

• ::first-letter
• ::first-line
• ::first-word
• ::last-letter
• ::last-line
• ::last-word
• ::nth-letter
• ::nth-line
• ::nth-word
• ::nth-last-letter
• ::nth-last-line
• ::nth-last-word

Insert Span Tag in your paragraph text. For Example- <p><span>Hello</span>My Name Is Dot</p and then style the first letter.

An easy way to do with HTML+CSS:

TEXT A <b>text b</b>


<h1>text b</h1>


<style>
h1 { /* the css style */}
h1:before {content:"text A (p.e.first word) with different style";
display:"inline";/* the different css style */}
</style>

You can select first Letter or Line

p::first-letter {
font-weight: bold;
color: red;
}

https://css-tricks.com/almanac/selectors/f/first-letter/

I find JavaScript being the best way to achieve this. Below is the JS code to set an element's First Word as the element's innerText

let text = document.querySelector('.menu_text');
const words = menu_text.innerHTML.toString().split(' ');
text.innerText = words[0];