如何在PHP和Javascript中转义字符\？

Question

I have this line of code and the \ is generating problems (at least in the highlighting of Sublime Text. How Can I escape this character?

text = text.replace(":\","<img src='images/Smilleys_08.png' class='smilley' />");
text = text.replace(":-\","<img src='images/Smilleys_08.png' class='smilley' />");

Also the same code needs to be in PHP and it goes like this

$tempText = str_replace(":\","<img src='images/Smilleys_08.png' class='smilley' />",$tempText);
$tempText = str_replace(":-\","<img src='images/Smilleys_08.png' class='smilley' />",$tempText);    

Answer 1

Just like you would escape any other character: Add a \ in front of it:

text = text.replace(":\\","<img src='images/Smilleys_08.png' class='smilley' />");

This counts for both php as JavaScript.

Working example:

alert(":\\ bla bla :\\ test".replace(":\\","<img src='images/Smilleys_08.png' class='smilley' />"));

Just keep in mind that a string replace only replaces the first occurrence of the search string, as shown in the demo.

To fix that, try this regex replace:

alert(":\\ bla bla :\\ test".replace(/:\\/g,"<img src='images/Smilleys_08.png' class='smilley' />"));

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