How to solve the problem that there are carriage return line feeds and spaces in the return values of ajax
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Recently, I was writing a page, using jquery ajax to realize the judgment. I just finished writing the test. There was no problem at all. After two days, I found that there was a problem, and the judgment failed. It turns out that all return values from alert are preceded by line breaks and spaces. (I still don't understand why there is such a problem on the same computer and in the same environment.)
Later, it was found on the Internet that some people had encountered the same problem. This problem exists both in jquery $. Ajax $. Get $. Post or in the soundtrack's XMLHttpRequest method, which sometimes makes mistakes when calling and judging. Look at the example.
Ajax Code:
The copy code is as follows:
$.get ('ajax.php', {' name':name}, function (data) {
Alert (data)
})
Ajax.php
The copy code is as follows:
Obviously, the string whose name is google is preceded by line breaks or spaces, which seriously affects the robustness of the program. I have encountered problems, and the judgment of the following program is not valid. So we need to remove it with regular expressions, so we can write like this.
The copy code is as follows:
$.get ('ajax.php', {' name':name}, function (data) {
NewData=data.replace (/\ s _
Alert (newData)
})
Ajax.php does not need to change
Then there is no wrapping space.
Everything I see on the Internet is used
NewData=data.replace (/ rn/g,'')
But I found that this rule has a problem with mine. Only part of the white space character has been reduced, so I decided that there should be other white space characters in the white space character except the newline return, so I chose\ s.
/. / g is an attribute of a regular expression that indicates a full-text match rather than stopping as soon as one is found
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