问题
qAnswersR[90430] = [];
qAnswersR[90430].push("[math]k: \frac{(x+20)^{2}}{256}+\frac{(y-15)^{2}}{81}=1[/math]");
And I need to get the value into variable, but when I console.log out the array like this:
console.log(qAnswersR[90430]);
I get: [math]k: rac{(x+20)^{2}}{256}+rac{(y-15)^{2}}{81}=1[/math],[math]k: 81(x+20)^{2}+256(y-15)^{2}=20736[/math]
But the escape tag "\" disappears, but I need it there, what should I do?
回答1:
But the escape tag "\" disappears, but I need it there, what should I do?
You need to escape the backslash, i.e., use \\ instead of just \:
"[math]k: \\frac{(x+20)^{2}}{256}+\\frac{(y-15)^{2}}{81}=1[/math]"
^ ^
回答2:
Escape the escape character, like \\a.
回答3:
You can use tagged template literals
var str = (s => s.raw)`[math]k: \frac{(x+20)^{2}}{256}+\frac{(y-15)^{2}}{81}=1[/math]`[0]
The anonymous arrow function will serve as tag and s.raw contains the original input
来源：https://stackoverflow.com/questions/6184453/how-to-make-javascript-ignore-escape-character