i cant pass data from python flask api to javascript by tojson-CodePudding

i am trying to send data from my flask api to javacript by return render_template("login.html",statef="0") but something hapening on javascript end keeping me from correctly recieving my data

the problem is in curr={{statef|tojson}} i tried (()) instead of {{}} but it doesnt work, it outputs me that tojson is not defined. here is my api code:

return render_template('login.html',statef="0")

and here is my javascript:

<script>
    var statef=document.getElementById("state"), curr= {{statef|tojson}}

    document.getElementById('state').innerHTML=curr
    console.log(curr);
    console.log(statef);
</script>

CodePudding user response：

Example of using `tojson` filter in flask template to parse JSON

You can pass data from Flask to Javascript and read it as JSON using the tojson filter in Flask template

Console log:

{email: '[email protected]', name: 'Alice'}
login:14 object

References:

Documentation of tojson filter in Flask template

Example of using tojson filter in flask template to parse JSON

Example of using `tojson` filter in flask template to parse JSON