用Jinja渲染JS会产生无效的数字而不是字符串 [英] Rendering to JS with Jinja produces invalid number rather than string
问题描述
我想将一个字符串传递给模板中的某个JavaScript。但是,当JavaScript运行时,字符串被解释为一个(无效的)数字。如何将字符串传递给JavaScript变量?
@ app.route('/ loadNext')
def loadNext():
return render_template('next.html',value ='1.1.1.1')
$ b $ (
函数(){
var tmp = {{value}} $($#$)$ $(#loadtable)。 ;
alert(tmp);
});
b
{{'1.1.1.1'}}
呈现为
1.1.1.1
行情不包括在内。 JavaScript试图将其解析为一个数字,而不能。幸运的是,Flask包含一个Jinja过滤器。
var tmp = {{value | tojson}};
tojson
将包含字符串引号,并省略数字值。 Jinja呈现的过滤值是正确类型的有效JavaScript。
I want to pass a string to some JavaScript in a template. However, the string is being interpreted as an (invalid) number when the JavaScript runs. How do I pass a string to a JavaScript variable?
@app.route('/loadNext')
def loadNext():
return render_template('next.html', value='1.1.1.1')
$("#loadtable").ready(
function(){
var tmp = {{ value }};
alert(tmp);
});
The problem is that
{{ '1.1.1.1' }}
renders as
1.1.1.1
Quotes are not included. JavaScript tries to parse this as a number and can't. Fortunately, Flask includes a Jinja filter for this.
var tmp = {{ value|tojson }};
tojson
will include quotes around strings and omit them for numeric values. The filtered value, when rendered by Jinja, is valid JavaScript with the correct type.
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